Add Remove Password UI into V2 (#4214)

# Description of Changes
- Add UI for Remove Password tool
- Fix more translation warnings that were being thrown in the console
- Add an encrypted PDF thumbnail and refactor thumbnail generation code

frontend/public/locales/en-GB/translation.json

@@ -35,11 +35,20 @@
   "true": "True",
   "false": "False",
   "unknown": "Unknown",
+  "app": {
+    "description": "The Free Adobe Acrobat alternative (10M+ Downloads)"
+  },
   "save": "Save",
   "saveToBrowser": "Save to Browser",
+  "download": "Download",
+  "editYourNewFiles": "Edit your new file(s)",
   "close": "Close",
   "fileSelected": "Selected: {{filename}}",
   "filesSelected": "{{count}} files selected",
+  "files": {
+    "title": "Files",
+    "placeholder": "Select a PDF file in the main view to get started"
+  },
   "noFavourites": "No favourites added",
   "downloadComplete": "Download Complete",
   "bored": "Bored Waiting?",
@@ -119,6 +128,7 @@
   "page": "Page",
   "pages": "Pages",
   "loading": "Loading...",
+  "review": "Review",
   "addToDoc": "Add to Document",
   "reset": "Reset",
   "apply": "Apply",
@@ -811,16 +821,6 @@
   "removePages": {
     "tags": "Remove pages,delete pages"
   },
-  "removePassword": {
-    "tags": "secure,Decrypt,security,unpassword,delete password",
-    "title": "Remove password",
-    "header": "Remove password (Decrypt)",
-    "selectText": {
-      "1": "Select PDF to Decrypt",
-      "2": "Password"
-    },
-    "submit": "Remove"
-  },
   "compressPdfs": {
     "tags": "squish,small,tiny"
   },
@@ -863,6 +863,7 @@
   "ocr": {
     "tags": "recognition,text,image,scan,read,identify,detection,editable",
     "title": "OCR / Scan Cleanup",
+    "desc": "Cleanup scans and detects text from images within a PDF and re-adds it as text.",
     "header": "Cleanup Scans / OCR (Optical Character Recognition)",
     "selectText": {
       "1": "Select languages that are to be detected within the PDF (Ones listed are the ones currently detected):",
@@ -1423,6 +1424,7 @@
   },
   "compress": {
     "title": "Compress",
+    "desc": "Compress PDFs to reduce their file size.",
     "header": "Compress PDF",
     "credit": "This service uses qpdf for PDF Compress/Optimisation.",
     "grayscale": {
@@ -1781,8 +1783,8 @@
     "error": {
       "failed": "An error occurred while encrypting the PDF."
     },
-    "title": "Passwords & Encryption",
     "passwords": {
+      "stepTitle": "Passwords & Encryption",
       "completed": "Passwords configured",
       "user": {
         "label": "User Password",
@@ -1822,6 +1824,7 @@
         "bullet3": "256-bit: Maximum security, requires modern viewers"
       },
       "permissions": {
+        "title": "Change Permissions",
         "text": "These permissions control what users can do with the PDF. Most effective when combined with an owner password."
       }
     }
@@ -1831,7 +1834,6 @@
     "desc": "Change document restrictions and permissions.",
     "completed": "Permissions changed",
     "submit": "Change Permissions",
-    "title": "Document Permissions",
     "error": {
       "failed": "An error occurred while changing PDF permissions."
     },
@@ -1875,5 +1877,27 @@
         "text": "To make these permissions unchangeable, use the Add Password tool to set an owner password."
       }
     }
+  },
+  "removePassword": {
+    "title": "Remove Password",
+    "desc": "Remove password protection from your PDF document.",
+    "tags": "secure,Decrypt,security,unpassword,delete password",
+    "password": {
+      "stepTitle": "Remove Password",
+      "label": "Current Password",
+      "placeholder": "Enter current password",
+      "completed": "Password configured"
+    },
+    "filenamePrefix": "decrypted",
+    "error": {
+      "failed": "An error occurred while removing the password from the PDF."
+    },
+    "tooltip": {
+      "description": "Removing password protection requires the password that was used to encrypt the PDF. This will decrypt the document, making it accessible without a password."
+    },
+    "submit": "Remove Password",
+    "results": {
+      "title": "Decrypted PDFs"
+    }
   }
 }

frontend/public/locales/en-US/translation.json

@@ -35,11 +35,20 @@
   "true": "True",
   "false": "False",
   "unknown": "Unknown",
+  "app": {
+    "description": "The Free Adobe Acrobat alternative (10M+ Downloads)"
+  },
   "save": "Save",
   "saveToBrowser": "Save to Browser",
+  "download": "Download",
+  "editYourNewFiles": "Edit your new file(s)",
   "close": "Close",
   "fileSelected": "Selected: {{filename}}",
   "filesSelected": "{{count}} files selected",
+  "files": {
+    "title": "Files",
+    "placeholder": "Select a PDF file in the main view to get started"
+  },
   "noFavourites": "No favorites added",
   "downloadComplete": "Download Complete",
   "bored": "Bored Waiting?",
@@ -119,6 +128,7 @@
   "page": "Page",
   "pages": "Pages",
   "loading": "Loading...",
+  "review": "Review",
   "addToDoc": "Add to Document",
   "reset": "Reset",
   "apply": "Apply",
@@ -752,16 +762,6 @@
   "removePages": {
     "tags": "Remove pages,delete pages"
   },
-  "removePassword": {
-    "tags": "secure,Decrypt,security,unpassword,delete password",
-    "title": "Remove password",
-    "header": "Remove password (Decrypt)",
-    "selectText": {
-      "1": "Select PDF to Decrypt",
-      "2": "Password"
-    },
-    "submit": "Remove"
-  },
   "compressPdfs": {
     "tags": "squish,small,tiny"
   },
@@ -804,6 +804,7 @@
   "ocr": {
     "tags": "recognition,text,image,scan,read,identify,detection,editable",
     "title": "OCR / Scan Cleanup",
+    "desc": "Cleanup scans and detects text from images within a PDF and re-adds it as text.",
     "header": "Cleanup Scans / OCR (Optical Character Recognition)",
     "selectText": {
       "1": "Select languages that are to be detected within the PDF (Ones listed are the ones currently detected):",
@@ -1635,6 +1636,8 @@
     }
   },
   "addPassword": {
+    "title": "Add Password",
+    "desc": "Encrypt your PDF document with a password.",
     "completed": "Password protection applied",
     "submit": "Encrypt",
     "filenamePrefix": "encrypted",
@@ -1686,6 +1689,7 @@
         "bullet3": "256-bit: Maximum security, requires modern viewers"
       },
       "permissions": {
+        "title": "Change Permissions",
         "text": "These permissions control what users can do with the PDF. Most effective when combined with an owner password."
       }
     }
@@ -1737,5 +1741,27 @@
         "text": "To make these permissions unchangeable, use the Add Password tool to set an owner password."
       }
     }
+  },
+  "removePassword": {
+    "title": "Remove Password",
+    "desc": "Remove password protection from your PDF document.",
+    "tags": "secure,Decrypt,security,unpassword,delete password",
+    "password": {
+      "stepTitle": "Remove Password",
+      "label": "Current Password",
+      "placeholder": "Enter current password",
+      "completed": "Password configured"
+    },
+    "filenamePrefix": "decrypted",
+    "error": {
+      "failed": "An error occurred while removing the password from the PDF."
+    },
+    "tooltip": {
+      "description": "Removing password protection requires the password that was used to encrypt the PDF. This will decrypt the document, making it accessible without a password."
+    },
+    "submit": "Remove Password",
+    "results": {
+      "title": "Decrypted PDFs"
+    }
   }
 }

frontend/src/components/shared/LandingPage.tsx

@@ -49,7 +49,7 @@ const LandingPage = () => {
         activateOnClick={false}
         styles={{
           root: {
-            '&[data-accept]': {
+            '&[dataAccept]': {
               backgroundColor: 'var(--landing-drop-paper-bg)',
             },
           },

frontend/src/components/tools/removePassword/RemovePasswordSettings.test.tsx

@@ -0,0 +1,127 @@
+import { describe, expect, test, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent } from '@testing-library/react';
+import { MantineProvider } from '@mantine/core';
+import RemovePasswordSettings from './RemovePasswordSettings';
+import { defaultParameters } from '../../../hooks/tools/removePassword/useRemovePasswordParameters';
+
+// Mock useTranslation with predictable return values
+const mockT = vi.fn((key: string) => `mock-${key}`);
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({ t: mockT })
+}));
+
+// Wrapper component to provide Mantine context
+const TestWrapper = ({ children }: { children: React.ReactNode }) => (
+  <MantineProvider>{children}</MantineProvider>
+);
+
+describe('RemovePasswordSettings', () => {
+  const mockOnParameterChange = vi.fn();
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  test('should render password input field', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+        />
+      </TestWrapper>
+    );
+
+    expect(screen.getByText('mock-removePassword.password.label')).toBeInTheDocument();
+  });
+
+  test('should call onParameterChange when password is entered', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+        />
+      </TestWrapper>
+    );
+
+    const passwordInput = screen.getByPlaceholderText('mock-removePassword.password.placeholder');
+    fireEvent.change(passwordInput, { target: { value: 'test-password' } });
+
+    expect(mockOnParameterChange).toHaveBeenCalledWith('password', 'test-password');
+  });
+
+  test('should display current password value', () => {
+    const parametersWithPassword = { ...defaultParameters, password: 'current-password' };
+
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={parametersWithPassword}
+          onParameterChange={mockOnParameterChange}
+        />
+      </TestWrapper>
+    );
+
+    const passwordInput = screen.getByPlaceholderText('mock-removePassword.password.placeholder') as HTMLInputElement;
+    expect(passwordInput.value).toBe('current-password');
+  });
+
+  test('should disable password input when disabled prop is true', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+          disabled={true}
+        />
+      </TestWrapper>
+    );
+
+    const passwordInput = screen.getByPlaceholderText('mock-removePassword.password.placeholder');
+    expect(passwordInput).toBeDisabled();
+  });
+
+  test('should enable password input when disabled prop is false', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+          disabled={false}
+        />
+      </TestWrapper>
+    );
+
+    const passwordInput = screen.getByPlaceholderText('mock-removePassword.password.placeholder');
+    expect(passwordInput).not.toBeDisabled();
+  });
+
+  test('should show password input as required', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+        />
+      </TestWrapper>
+    );
+
+    const passwordInput = screen.getByPlaceholderText('mock-removePassword.password.placeholder');
+    expect(passwordInput).toHaveAttribute('required');
+  });
+
+  test('should call translation function with correct keys', () => {
+    render(
+      <TestWrapper>
+        <RemovePasswordSettings
+          parameters={defaultParameters}
+          onParameterChange={mockOnParameterChange}
+        />
+      </TestWrapper>
+    );
+
+    expect(mockT).toHaveBeenCalledWith('removePassword.password.label', 'Current Password');
+    expect(mockT).toHaveBeenCalledWith('removePassword.password.placeholder', 'Enter current password');
+  });
+});

frontend/src/components/tools/removePassword/RemovePasswordSettings.tsx

@@ -0,0 +1,30 @@
+import { Stack, Text, PasswordInput } from "@mantine/core";
+import { useTranslation } from "react-i18next";
+import { RemovePasswordParameters } from "../../../hooks/tools/removePassword/useRemovePasswordParameters";
+
+interface RemovePasswordSettingsProps {
+  parameters: RemovePasswordParameters;
+  onParameterChange: (key: keyof RemovePasswordParameters, value: string) => void;
+  disabled?: boolean;
+}
+
+const RemovePasswordSettings = ({ parameters, onParameterChange, disabled = false }: RemovePasswordSettingsProps) => {
+  const { t } = useTranslation();
+
+  return (
+    <Stack gap="md">
+      <Stack gap="sm">
+        <PasswordInput
+          label={t('removePassword.password.label', 'Current Password')}
+          placeholder={t('removePassword.password.placeholder', 'Enter current password')}
+          value={parameters.password}
+          onChange={(e) => onParameterChange('password', e.target.value)}
+          disabled={disabled}
+          required
+        />
+      </Stack>
+    </Stack>
+  );
+};
+
+export default RemovePasswordSettings;

frontend/src/components/tools/shared/SuggestedToolsSection.tsx

@@ -11,9 +11,9 @@ export function SuggestedToolsSection(): React.ReactElement {
   return (
     <Stack gap="md">
       <Divider />
-      
+
       <Text size="lg" fw={600}>
-        {t('editYourNewFiles', 'Edit your new File(s)')}
+        {t('editYourNewFiles', 'Edit your new file(s)')}
       </Text>
 
       <Stack gap="xs">
@@ -39,4 +39,4 @@ export function SuggestedToolsSection(): React.ReactElement {
       </Stack>
     </Stack>
   );
-}
+}

frontend/src/components/tooltips/useAddPasswordPermissionsTips.ts

@@ -6,7 +6,7 @@ export const useAddPasswordPermissionsTips = (): TooltipContent => {
 
   return {
     header: {
-      title: t("addPassword.tooltip.permissions.title", "Document Permissions")
+      title: t("addPassword.tooltip.permissions.title", "Change Permissions")
     },
     tips: [
       {

frontend/src/components/tooltips/useRemovePasswordTips.ts

@@ -0,0 +1,20 @@
+import { useTranslation } from 'react-i18next';
+import { TooltipContent } from '../../types/tips';
+
+export const useRemovePasswordTips = (): TooltipContent => {
+  const { t } = useTranslation();
+
+  return {
+    header: {
+      title: t("removePassword.title", "Remove Password")
+    },
+    tips: [
+      {
+        description: t(
+          "removePassword.tooltip.description",
+          "Removing password protection requires the current password that was used to encrypt the PDF. This will decrypt the document, making it accessible without a password."
+        )
+      }
+    ]
+  };
+};

frontend/src/contexts/FileContext.tsx

@@ -338,19 +338,19 @@ function fileContextReducer(state: FileContextState, action: FileContextAction):
     case 'CONSUME_FILES': {
       const { inputFiles, outputFiles } = action.payload;
       const unpinnedInputFiles = inputFiles.filter(file => !state.pinnedFiles.has(file));
-      
+
       // Remove unpinned input files and add output files
       const newActiveFiles = [
         ...state.activeFiles.filter(file => !unpinnedInputFiles.includes(file)),
         ...outputFiles
       ];
-      
+
       // Update processed files map - remove consumed files, keep pinned ones
       const newProcessedFiles = new Map(state.processedFiles);
       unpinnedInputFiles.forEach(file => {
         newProcessedFiles.delete(file);
       });
-      
+
       return {
         ...state,
         activeFiles: newActiveFiles,
@@ -617,7 +617,7 @@ export function FileContextProvider({
   // File consumption function
   const consumeFiles = useCallback(async (inputFiles: File[], outputFiles: File[]): Promise<void> => {
     dispatch({ type: 'CONSUME_FILES', payload: { inputFiles, outputFiles } });
-    
+
     // Store new output files if persistence is enabled
     if (enablePersistence) {
       for (const file of outputFiles) {
@@ -625,7 +625,7 @@ export function FileContextProvider({
           const fileId = getFileId(file);
           if (!fileId) {
             try {
-              const thumbnail = await (thumbnailGenerationService as any).generateThumbnail(file);
+              const thumbnail = await (thumbnailGenerationService as any /* FIX ME */).generateThumbnail(file);
               const storedFile = await fileStorage.storeFile(file, thumbnail);
               Object.defineProperty(file, 'id', { value: storedFile.id, writable: false });
             } catch (thumbnailError) {

frontend/src/hooks/tools/addPassword/useAddPasswordOperation.test.ts

@@ -49,25 +49,6 @@ describe('useAddPasswordOperation', () => {
     mockUseToolOperation.mockReturnValue(mockToolOperationReturn);
   });
 
-  test('should configure useToolOperation with correct parameters', () => {
-    renderHook(() => useAddPasswordOperation());
-
-    expect(mockUseToolOperation).toHaveBeenCalledWith({
-      operationType: 'addPassword',
-      endpoint: '/api/v1/security/add-password',
-      buildFormData: expect.any(Function),
-      filePrefix: 'translated-addPassword.filenamePrefix_',
-      multiFileEndpoint: false,
-      getErrorMessage: 'error-handler-function'
-    });
-  });
-
-  test('should return the result from useToolOperation', () => {
-    const { result } = renderHook(() => useAddPasswordOperation());
-
-    expect(result.current).toBe(mockToolOperationReturn);
-  });
-
   test.each([
     {
       description: 'with all parameters filled',

frontend/src/hooks/tools/changePermissions/useChangePermissionsOperation.test.ts

@@ -48,25 +48,6 @@ describe('useChangePermissionsOperation', () => {
     mockUseToolOperation.mockReturnValue(mockToolOperationReturn);
   });
 
-  test('should configure useToolOperation with correct parameters', () => {
-    renderHook(() => useChangePermissionsOperation());
-
-    expect(mockUseToolOperation).toHaveBeenCalledWith({
-      operationType: 'changePermissions',
-      endpoint: '/api/v1/security/add-password',
-      buildFormData: expect.any(Function),
-      filePrefix: 'permissions_',
-      multiFileEndpoint: false,
-      getErrorMessage: 'error-handler-function'
-    });
-  });
-
-  test('should return the result from useToolOperation', () => {
-    const { result } = renderHook(() => useChangePermissionsOperation());
-
-    expect(result.current).toBe(mockToolOperationReturn);
-  });
-
   test.each([
     {
       preventAssembly: false,

frontend/src/hooks/tools/removePassword/useRemovePasswordOperation.test.ts

@@ -0,0 +1,104 @@
+import { describe, expect, test, vi, beforeEach } from 'vitest';
+import { renderHook } from '@testing-library/react';
+import { useRemovePasswordOperation } from './useRemovePasswordOperation';
+import type { RemovePasswordParameters } from './useRemovePasswordParameters';
+
+// Mock the useToolOperation hook
+vi.mock('../shared/useToolOperation', () => ({
+  useToolOperation: vi.fn()
+}));
+
+// Mock the translation hook
+const mockT = vi.fn((key: string) => `translated-${key}`);
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({ t: mockT })
+}));
+
+// Mock the error handler
+vi.mock('../../../utils/toolErrorHandler', () => ({
+  createStandardErrorHandler: vi.fn(() => 'error-handler-function')
+}));
+
+// Import the mocked function
+import { ToolOperationConfig, ToolOperationHook, useToolOperation } from '../shared/useToolOperation';
+
+describe('useRemovePasswordOperation', () => {
+  const mockUseToolOperation = vi.mocked(useToolOperation);
+
+  const getToolConfig = (): ToolOperationConfig<RemovePasswordParameters> => mockUseToolOperation.mock.calls[0][0];
+
+  const mockToolOperationReturn: ToolOperationHook<unknown> = {
+    files: [],
+    thumbnails: [],
+    downloadUrl: null,
+    downloadFilename: '',
+    isLoading: false,
+    errorMessage: null,
+    status: '',
+    isGeneratingThumbnails: false,
+    progress: null,
+    executeOperation: vi.fn(),
+    resetResults: vi.fn(),
+    clearError: vi.fn(),
+    cancelOperation: vi.fn(),
+  };
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockUseToolOperation.mockReturnValue(mockToolOperationReturn);
+  });
+
+  test.each([
+    {
+      description: 'with valid password',
+      password: 'test-password'
+    },
+    {
+      description: 'with complex password',
+      password: 'C0mpl3x@P@ssw0rd!'
+    },
+    {
+      description: 'with single character password',
+      password: 'a'
+    }
+  ])('should create form data correctly $description', ({ password }) => {
+    renderHook(() => useRemovePasswordOperation());
+
+    const callArgs = getToolConfig();
+    const buildFormData = callArgs.buildFormData;
+
+    const testParameters: RemovePasswordParameters = {
+      password
+    };
+
+    const testFile = new File(['test content'], 'test.pdf', { type: 'application/pdf' });
+    const formData = buildFormData(testParameters, testFile as any);
+
+    // Verify the form data contains the file
+    expect(formData.get('fileInput')).toBe(testFile);
+
+    // Verify password parameter
+    expect(formData.get('password')).toBe(password);
+  });
+
+  test('should use correct translation for error messages', () => {
+    renderHook(() => useRemovePasswordOperation());
+
+    expect(mockT).toHaveBeenCalledWith(
+      'removePassword.error.failed',
+      'An error occurred while removing the password from the PDF.'
+    );
+  });
+
+  test.each([
+    { property: 'multiFileEndpoint' as const, expectedValue: false },
+    { property: 'endpoint' as const, expectedValue: '/api/v1/security/remove-password' },
+    { property: 'filePrefix' as const, expectedValue: 'translated-removePassword.filenamePrefix_' },
+    { property: 'operationType' as const, expectedValue: 'removePassword' }
+  ])('should configure $property correctly', ({ property, expectedValue }) => {
+    renderHook(() => useRemovePasswordOperation());
+
+    const callArgs = getToolConfig();
+    expect(callArgs[property]).toBe(expectedValue);
+  });
+});

frontend/src/hooks/tools/removePassword/useRemovePasswordOperation.ts

@@ -0,0 +1,24 @@
+import { useTranslation } from 'react-i18next';
+import { useToolOperation } from '../shared/useToolOperation';
+import { createStandardErrorHandler } from '../../../utils/toolErrorHandler';
+import { RemovePasswordParameters } from './useRemovePasswordParameters';
+
+export const useRemovePasswordOperation = () => {
+  const { t } = useTranslation();
+
+  const buildFormData = (parameters: RemovePasswordParameters, file: File): FormData => {
+    const formData = new FormData();
+    formData.append("fileInput", file);
+    formData.append("password", parameters.password);
+    return formData;
+  };
+
+  return useToolOperation<RemovePasswordParameters>({
+    operationType: 'removePassword',
+    endpoint: '/api/v1/security/remove-password',
+    buildFormData,
+    filePrefix: t('removePassword.filenamePrefix', 'decrypted') + '_',
+    multiFileEndpoint: false,
+    getErrorMessage: createStandardErrorHandler(t('removePassword.error.failed', 'An error occurred while removing the password from the PDF.'))
+  });
+};

frontend/src/hooks/tools/removePassword/useRemovePasswordParameters.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, test } from 'vitest';
+import { renderHook, act } from '@testing-library/react';
+import { useRemovePasswordParameters, defaultParameters } from './useRemovePasswordParameters';
+
+describe('useRemovePasswordParameters', () => {
+  test('should initialize with default parameters', () => {
+    const { result } = renderHook(() => useRemovePasswordParameters());
+
+    expect(result.current.parameters).toStrictEqual(defaultParameters);
+  });
+
+  test('should update password parameter', () => {
+    const { result } = renderHook(() => useRemovePasswordParameters());
+
+    act(() => {
+      result.current.updateParameter('password', 'test-password');
+    });
+
+    expect(result.current.parameters.password).toBe('test-password');
+  });
+
+  test('should reset parameters to defaults', () => {
+    const { result } = renderHook(() => useRemovePasswordParameters());
+
+    // First, change the password
+    act(() => {
+      result.current.updateParameter('password', 'test-password');
+    });
+
+    expect(result.current.parameters.password).toBe('test-password');
+
+    // Then reset
+    act(() => {
+      result.current.resetParameters();
+    });
+
+    expect(result.current.parameters).toStrictEqual(defaultParameters);
+  });
+
+  test('should return correct endpoint name', () => {
+    const { result } = renderHook(() => useRemovePasswordParameters());
+
+    expect(result.current.getEndpointName()).toBe('remove-password');
+  });
+
+  test.each([
+    {
+      description: 'with valid password',
+      password: 'valid-password',
+      expectedValid: true
+    },
+    {
+      description: 'with empty password',
+      password: '',
+      expectedValid: false
+    },
+    {
+      description: 'with whitespace only password',
+      password: '   \t   ',
+      expectedValid: true
+    },
+    {
+      description: 'with password containing special characters',
+      password: 'p@ssw0rd!',
+      expectedValid: true
+    },
+    {
+      description: 'with single character password',
+      password: 'a',
+      expectedValid: true
+    }
+  ])('should validate parameters correctly $description', ({ password, expectedValid }) => {
+    const { result } = renderHook(() => useRemovePasswordParameters());
+
+    act(() => {
+      result.current.updateParameter('password', password);
+    });
+
+    expect(result.current.validateParameters()).toBe(expectedValid);
+  });
+});

frontend/src/hooks/tools/removePassword/useRemovePasswordParameters.ts

@@ -0,0 +1,49 @@
+import { useState } from 'react';
+
+export interface RemovePasswordParameters {
+  password: string;
+}
+
+export interface RemovePasswordParametersHook {
+  parameters: RemovePasswordParameters;
+  updateParameter: <K extends keyof RemovePasswordParameters>(parameter: K, value: RemovePasswordParameters[K]) => void;
+  resetParameters: () => void;
+  validateParameters: () => boolean;
+  getEndpointName: () => string;
+}
+
+export const defaultParameters: RemovePasswordParameters = {
+  password: '',
+};
+
+export const useRemovePasswordParameters = (): RemovePasswordParametersHook => {
+  const [parameters, setParameters] = useState<RemovePasswordParameters>(defaultParameters);
+
+  const updateParameter = <K extends keyof RemovePasswordParameters>(parameter: K, value: RemovePasswordParameters[K]) => {
+    setParameters(prev => ({
+       ...prev,
+       [parameter]: value,
+      })
+    );
+  };
+
+  const resetParameters = () => {
+    setParameters(defaultParameters);
+  };
+
+  const validateParameters = () => {
+    return parameters.password !== '';
+  };
+
+  const getEndpointName = () => {
+    return 'remove-password';
+  };
+
+  return {
+    parameters,
+    updateParameter,
+    resetParameters,
+    validateParameters,
+    getEndpointName,
+  };
+};

frontend/src/hooks/useToolManagement.tsx

@@ -6,8 +6,9 @@ import SwapHorizIcon from "@mui/icons-material/SwapHoriz";
 import ApiIcon from "@mui/icons-material/Api";
 import CleaningServicesIcon from "@mui/icons-material/CleaningServices";
 import LockIcon from "@mui/icons-material/Lock";
+import LockOpenIcon from "@mui/icons-material/LockOpen";
 import { useMultipleEndpointsEnabled } from "./useEndpointConfig";
-import { Tool, ToolDefinition, BaseToolProps, ToolRegistry } from "../types/tool";
+import { Tool, ToolDefinition, ToolRegistry } from "../types/tool";
 
 
 // Add entry here with maxFiles, endpoints, and lazy component
@@ -104,6 +105,15 @@ const toolDefinitions: Record<string, ToolDefinition> = {
     description: "Change document restrictions and permissions",
     endpoints: ["add-password"]
   },
+  removePassword: {
+    id: "removePassword",
+    icon: <LockOpenIcon />,
+    component: React.lazy(() => import("../tools/RemovePassword")),
+    maxFiles: -1,
+    category: "security",
+    description: "Remove password protection from PDF files",
+    endpoints: ["remove-password"]
+  },
 
 };
 

frontend/src/tools/AddPassword.tsx

@@ -95,6 +95,7 @@ const AddPassword = ({ onPreviewFile, onComplete, onError }: BaseToolProps) => {
             disabled={endpointLoading}
           />
         ),
+        tooltip: addPasswordPermissionsTips,
       },
     ],
     executeButton: {

frontend/src/tools/RemovePassword.tsx

@@ -0,0 +1,98 @@
+import { useEffect } from "react";
+import { useTranslation } from "react-i18next";
+import { useEndpointEnabled } from "../hooks/useEndpointConfig";
+import { useFileContext } from "../contexts/FileContext";
+import { useToolFileSelection } from "../contexts/FileSelectionContext";
+
+import { createToolFlow } from "../components/tools/shared/createToolFlow";
+
+import RemovePasswordSettings from "../components/tools/removePassword/RemovePasswordSettings";
+
+import { useRemovePasswordParameters } from "../hooks/tools/removePassword/useRemovePasswordParameters";
+import { useRemovePasswordOperation } from "../hooks/tools/removePassword/useRemovePasswordOperation";
+import { useRemovePasswordTips } from "../components/tooltips/useRemovePasswordTips";
+import { BaseToolProps } from "../types/tool";
+
+const RemovePassword = ({ onPreviewFile, onComplete, onError }: BaseToolProps) => {
+  const { t } = useTranslation();
+  const { setCurrentMode } = useFileContext();
+  const { selectedFiles } = useToolFileSelection();
+
+  const removePasswordParams = useRemovePasswordParameters();
+  const removePasswordOperation = useRemovePasswordOperation();
+  const removePasswordTips = useRemovePasswordTips();
+
+  // Endpoint validation
+  const { enabled: endpointEnabled, loading: endpointLoading } = useEndpointEnabled(removePasswordParams.getEndpointName());
+
+  useEffect(() => {
+    removePasswordOperation.resetResults();
+    onPreviewFile?.(null);
+  }, [removePasswordParams.parameters]);
+
+  const handleRemovePassword = async () => {
+    try {
+      await removePasswordOperation.executeOperation(removePasswordParams.parameters, selectedFiles);
+      if (removePasswordOperation.files && onComplete) {
+        onComplete(removePasswordOperation.files);
+      }
+    } catch (error) {
+      if (onError) {
+        onError(error instanceof Error ? error.message : t("removePassword.error.failed", "Remove password operation failed"));
+      }
+    }
+  };
+
+  const handleThumbnailClick = (file: File) => {
+    onPreviewFile?.(file);
+    sessionStorage.setItem("previousMode", "removePassword");
+    setCurrentMode("viewer");
+  };
+
+  const handleSettingsReset = () => {
+    removePasswordOperation.resetResults();
+    onPreviewFile?.(null);
+    setCurrentMode("removePassword");
+  };
+
+  const hasFiles = selectedFiles.length > 0;
+  const hasResults = removePasswordOperation.files.length > 0 || removePasswordOperation.downloadUrl !== null;
+  const passwordCollapsed = !hasFiles || hasResults;
+
+  return createToolFlow({
+    files: {
+      selectedFiles,
+      isCollapsed: hasFiles || hasResults,
+    },
+    steps: [
+      {
+        title: t("removePassword.password.stepTitle", "Remove Password"),
+        isCollapsed: passwordCollapsed,
+        onCollapsedClick: hasResults ? handleSettingsReset : undefined,
+        tooltip: removePasswordTips,
+        content: (
+          <RemovePasswordSettings
+            parameters={removePasswordParams.parameters}
+            onParameterChange={removePasswordParams.updateParameter}
+            disabled={endpointLoading}
+          />
+        ),
+      },
+    ],
+    executeButton: {
+      text: t("removePassword.submit", "Remove Password"),
+      isVisible: !hasResults,
+      loadingText: t("loading"),
+      onClick: handleRemovePassword,
+      disabled: !removePasswordParams.validateParameters() || !hasFiles || !endpointEnabled,
+    },
+    review: {
+      isVisible: hasResults,
+      operation: removePasswordOperation,
+      title: t("removePassword.results.title", "Decrypted PDFs"),
+      onFileClick: handleThumbnailClick,
+    },
+  });
+};
+
+export default RemovePassword;

frontend/src/types/fileContext.ts

@@ -5,18 +5,19 @@
 import { ProcessedFile } from './processing';
 import { PDFDocument, PDFPage, PageOperation } from './pageEditor';
 
-export type ModeType = 
+export type ModeType =
-  | 'viewer' 
+  | 'viewer'
-  | 'pageEditor' 
+  | 'pageEditor'
-  | 'fileEditor' 
+  | 'fileEditor'
-  | 'merge' 
+  | 'merge'
-  | 'split' 
+  | 'split'
-  | 'compress' 
+  | 'compress'
-  | 'ocr' 
+  | 'ocr'
-  | 'convert' 
+  | 'convert'
   | 'sanitize'
   | 'addPassword'
-  | 'changePermissions';
+  | 'changePermissions'
+  | 'removePassword';
 
 export type ViewType = 'viewer' | 'pageEditor' | 'fileEditor';
 

frontend/src/utils/thumbnailUtils.ts

@@ -1,5 +1,15 @@
 import { getDocument } from "pdfjs-dist";
 
+interface ColorScheme {
+  bgTop: string;
+  bgBottom: string;
+  border: string;
+  icon: string;
+  badge: string;
+  textPrimary: string;
+  textSecondary: string;
+}
+
 /**
  * Calculate thumbnail scale based on file size
  * Smaller files get higher quality, larger files get lower quality
@@ -14,6 +24,54 @@ export function calculateScaleFromFileSize(fileSize: number): number {
   return 0.15;                            // 30MB+: Low quality
 }
 
+/**
+ * Generate encrypted PDF thumbnail with lock icon
+ */
+function generateEncryptedPDFThumbnail(file: File): string {
+  const canvas = document.createElement('canvas');
+  canvas.width = 120;
+  canvas.height = 150;
+  const ctx = canvas.getContext('2d')!;
+
+  // Use PDF color scheme but with encrypted styling
+  const colorScheme = getFileTypeColorScheme('PDF');
+
+  // Create gradient background
+  const gradient = ctx.createLinearGradient(0, 0, 0, canvas.height);
+  gradient.addColorStop(0, colorScheme.bgTop);
+  gradient.addColorStop(1, colorScheme.bgBottom);
+
+  // Rounded rectangle background
+  drawRoundedRect(ctx, 8, 8, canvas.width - 16, canvas.height - 16, 8);
+  ctx.fillStyle = gradient;
+  ctx.fill();
+
+  // Border with dashed pattern for encrypted indicator
+  ctx.strokeStyle = colorScheme.border;
+  ctx.lineWidth = 2;
+  ctx.setLineDash([4, 4]);
+  ctx.stroke();
+  ctx.setLineDash([]); // Reset dash pattern
+
+  // Large lock icon as main element
+  drawLargeLockIcon(ctx, canvas.width / 2, canvas.height / 2 - 10, colorScheme);
+
+  // "PDF" text under the lock
+  ctx.font = 'bold 14px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif';
+  ctx.fillStyle = colorScheme.icon;
+  ctx.textAlign = 'center';
+  ctx.fillText('PDF', canvas.width / 2, canvas.height / 2 + 35);
+
+  // File size with subtle styling
+  const sizeText = formatFileSize(file.size);
+  ctx.font = '11px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif';
+  ctx.fillStyle = colorScheme.textSecondary;
+  ctx.textAlign = 'center';
+  ctx.fillText(sizeText, canvas.width / 2, canvas.height - 15);
+
+  return canvas.toDataURL();
+}
+
 /**
  * Generate modern placeholder thumbnail with file extension
  */
@@ -22,71 +80,71 @@ function generatePlaceholderThumbnail(file: File): string {
   canvas.width = 120;
   canvas.height = 150;
   const ctx = canvas.getContext('2d')!;
-  
+
   // Get file extension for color theming
   const extension = file.name.split('.').pop()?.toUpperCase() || 'FILE';
   const colorScheme = getFileTypeColorScheme(extension);
-  
+
   // Create gradient background
   const gradient = ctx.createLinearGradient(0, 0, 0, canvas.height);
   gradient.addColorStop(0, colorScheme.bgTop);
   gradient.addColorStop(1, colorScheme.bgBottom);
-  
+
   // Rounded rectangle background
   drawRoundedRect(ctx, 8, 8, canvas.width - 16, canvas.height - 16, 8);
   ctx.fillStyle = gradient;
   ctx.fill();
-  
+
   // Subtle shadow/border
   ctx.strokeStyle = colorScheme.border;
   ctx.lineWidth = 1.5;
   ctx.stroke();
-  
+
   // Modern document icon
   drawModernDocumentIcon(ctx, canvas.width / 2, 45, colorScheme.icon);
-  
+
   // Extension badge
   drawExtensionBadge(ctx, canvas.width / 2, canvas.height / 2 + 15, extension, colorScheme);
-  
+
   // File size with subtle styling
   const sizeText = formatFileSize(file.size);
   ctx.font = '11px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif';
   ctx.fillStyle = colorScheme.textSecondary;
   ctx.textAlign = 'center';
   ctx.fillText(sizeText, canvas.width / 2, canvas.height - 15);
-  
+
   return canvas.toDataURL();
 }
 
 /**
  * Get color scheme based on file extension
  */
-function getFileTypeColorScheme(extension: string) {
+function getFileTypeColorScheme(extension: string): ColorScheme {
-  const schemes: Record<string, any> = {
+  const schemes: Record<string, ColorScheme> = {
     // Documents
     'PDF': { bgTop: '#FF6B6B20', bgBottom: '#FF6B6B10', border: '#FF6B6B40', icon: '#FF6B6B', badge: '#FF6B6B', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'DOC': { bgTop: '#4ECDC420', bgBottom: '#4ECDC410', border: '#4ECDC440', icon: '#4ECDC4', badge: '#4ECDC4', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'DOCX': { bgTop: '#4ECDC420', bgBottom: '#4ECDC410', border: '#4ECDC440', icon: '#4ECDC4', badge: '#4ECDC4', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'TXT': { bgTop: '#95A5A620', bgBottom: '#95A5A610', border: '#95A5A640', icon: '#95A5A6', badge: '#95A5A6', textPrimary: '#FFFFFF', textSecondary: '#666666' },
-    
+
     // Spreadsheets
     'XLS': { bgTop: '#2ECC7120', bgBottom: '#2ECC7110', border: '#2ECC7140', icon: '#2ECC71', badge: '#2ECC71', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'XLSX': { bgTop: '#2ECC7120', bgBottom: '#2ECC7110', border: '#2ECC7140', icon: '#2ECC71', badge: '#2ECC71', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'CSV': { bgTop: '#2ECC7120', bgBottom: '#2ECC7110', border: '#2ECC7140', icon: '#2ECC71', badge: '#2ECC71', textPrimary: '#FFFFFF', textSecondary: '#666666' },
-    
+
     // Presentations
     'PPT': { bgTop: '#E67E2220', bgBottom: '#E67E2210', border: '#E67E2240', icon: '#E67E22', badge: '#E67E22', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'PPTX': { bgTop: '#E67E2220', bgBottom: '#E67E2210', border: '#E67E2240', icon: '#E67E22', badge: '#E67E22', textPrimary: '#FFFFFF', textSecondary: '#666666' },
-    
+
     // Archives
     'ZIP': { bgTop: '#9B59B620', bgBottom: '#9B59B610', border: '#9B59B640', icon: '#9B59B6', badge: '#9B59B6', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     'RAR': { bgTop: '#9B59B620', bgBottom: '#9B59B610', border: '#9B59B640', icon: '#9B59B6', badge: '#9B59B6', textPrimary: '#FFFFFF', textSecondary: '#666666' },
     '7Z': { bgTop: '#9B59B620', bgBottom: '#9B59B610', border: '#9B59B640', icon: '#9B59B6', badge: '#9B59B6', textPrimary: '#FFFFFF', textSecondary: '#666666' },
-    
+
     // Default
     'DEFAULT': { bgTop: '#74B9FF20', bgBottom: '#74B9FF10', border: '#74B9FF40', icon: '#74B9FF', badge: '#74B9FF', textPrimary: '#FFFFFF', textSecondary: '#666666' }
   };
-  
+
   return schemes[extension] || schemes['DEFAULT'];
 }
 
@@ -115,11 +173,11 @@ function drawModernDocumentIcon(ctx: CanvasRenderingContext2D, centerX: number,
   ctx.fillStyle = color;
   ctx.strokeStyle = color;
   ctx.lineWidth = 2;
-  
+
   // Document body
   drawRoundedRect(ctx, centerX - size/2, centerY - size/2, size, size * 1.2, 3);
   ctx.fill();
-  
+
   // Folded corner
   ctx.beginPath();
   ctx.moveTo(centerX + size/2 - 6, centerY - size/2);
@@ -130,18 +188,73 @@ function drawModernDocumentIcon(ctx: CanvasRenderingContext2D, centerX: number,
   ctx.fill();
 }
 
+/**
+ * Draw large lock icon for encrypted PDFs
+ */
+function drawLargeLockIcon(ctx: CanvasRenderingContext2D, centerX: number, centerY: number, colorScheme: ColorScheme) {
+  const size = 48;
+  ctx.fillStyle = colorScheme.icon;
+  ctx.strokeStyle = colorScheme.icon;
+  ctx.lineWidth = 3;
+
+  // Lock body (rectangle)
+  const bodyWidth = size;
+  const bodyHeight = size * 0.75;
+  const bodyX = centerX - bodyWidth / 2;
+  const bodyY = centerY - bodyHeight / 4;
+
+  drawRoundedRect(ctx, bodyX, bodyY, bodyWidth, bodyHeight, 4);
+  ctx.fill();
+
+  // Lock shackle (semicircle)
+  const shackleRadius = size * 0.32;
+  const shackleY = centerY - size * 0.25;
+
+  ctx.beginPath();
+  ctx.arc(centerX, shackleY, shackleRadius, Math.PI, 2 * Math.PI);
+  ctx.stroke();
+
+  // Keyhole
+  const keyholeX = centerX;
+  const keyholeY = bodyY + bodyHeight * 0.4;
+  ctx.fillStyle = colorScheme.textPrimary;
+  ctx.beginPath();
+  ctx.arc(keyholeX, keyholeY, 4, 0, 2 * Math.PI);
+  ctx.fill();
+  ctx.fillRect(keyholeX - 2, keyholeY, 4, 8);
+}
+
+/**
+ * Generate standard PDF thumbnail by rendering first page
+ */
+async function generateStandardPDFThumbnail(pdf: any, scale: number): Promise<string> {
+  const page = await pdf.getPage(1);
+  const viewport = page.getViewport({ scale });
+  const canvas = document.createElement("canvas");
+  canvas.width = viewport.width;
+  canvas.height = viewport.height;
+  const context = canvas.getContext("2d");
+
+  if (!context) {
+    throw new Error('Could not get canvas context');
+  }
+
+  await page.render({ canvasContext: context, viewport }).promise;
+  return canvas.toDataURL();
+}
+
 /**
  * Draw extension badge
  */
-function drawExtensionBadge(ctx: CanvasRenderingContext2D, centerX: number, centerY: number, extension: string, colorScheme: any) {
+function drawExtensionBadge(ctx: CanvasRenderingContext2D, centerX: number, centerY: number, extension: string, colorScheme: ColorScheme) {
   const badgeWidth = Math.max(extension.length * 8 + 16, 40);
   const badgeHeight = 22;
-  
+
   // Badge background
   drawRoundedRect(ctx, centerX - badgeWidth/2, centerY - badgeHeight/2, badgeWidth, badgeHeight, 11);
   ctx.fillStyle = colorScheme.badge;
   ctx.fill();
-  
+
   // Badge text
   ctx.font = 'bold 11px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif';
   ctx.fillStyle = colorScheme.textPrimary;
@@ -160,6 +273,29 @@ function formatFileSize(bytes: number): string {
   return parseFloat((bytes / Math.pow(k, i)).toFixed(1)) + ' ' + sizes[i];
 }
 
+async function generatePDFThumbnail(arrayBuffer: ArrayBuffer, file: File, scale: number): Promise<string> {
+  try {
+    const pdf = await getDocument({
+      data: arrayBuffer,
+      disableAutoFetch: true,
+      disableStream: true
+    }).promise;
+
+    const thumbnail = await generateStandardPDFThumbnail(pdf, scale);
+
+    // Immediately clean up memory after thumbnail generation
+    pdf.destroy();
+    return thumbnail;
+  } catch (error) {
+    if (error instanceof Error) {
+      // Check if PDF is encrypted
+      if (error.name === "PasswordException") {
+        return generateEncryptedPDFThumbnail(file);
+      }
+    }
+    throw error; // Not an encryption issue, re-throw
+  }
+}
 
 /**
  * Generate thumbnail for any file type
@@ -187,77 +323,27 @@ export async function generateThumbnailForFile(file: File): Promise<string | und
   console.log('Generating thumbnail for', file.name);
   const scale = calculateScaleFromFileSize(file.size);
   console.log(`Using scale ${scale} for ${file.name} (${(file.size / 1024 / 1024).toFixed(1)}MB)`);
+
+  // Only read first 2MB for thumbnail generation to save memory
+  const chunkSize = 2 * 1024 * 1024; // 2MB
+  const chunk = file.slice(0, Math.min(chunkSize, file.size));
+  const arrayBuffer = await chunk.arrayBuffer();
+
   try {
-    // Only read first 2MB for thumbnail generation to save memory
+    return await generatePDFThumbnail(arrayBuffer, file, scale);
-    const chunkSize = 2 * 1024 * 1024; // 2MB
-    const chunk = file.slice(0, Math.min(chunkSize, file.size));
-    const arrayBuffer = await chunk.arrayBuffer();
-
-    const pdf = await getDocument({
-      data: arrayBuffer,
-      disableAutoFetch: true,
-      disableStream: true
-    }).promise;
-
-    const page = await pdf.getPage(1);
-    const viewport = page.getViewport({ scale }); // Dynamic scale based on file size
-    const canvas = document.createElement("canvas");
-    canvas.width = viewport.width;
-    canvas.height = viewport.height;
-    const context = canvas.getContext("2d");
-
-    if (!context) {
-      throw new Error('Could not get canvas context');
-    }
-
-    await page.render({ canvasContext: context, viewport }).promise;
-    const thumbnail = canvas.toDataURL();
-
-    // Immediately clean up memory after thumbnail generation
-    pdf.destroy();
-    console.log('Thumbnail generated and PDF destroyed for', file.name);
-
-    return thumbnail;
   } catch (error) {
     if (error instanceof Error) {
       if (error.name === 'InvalidPDFException') {
         console.warn(`PDF structure issue for ${file.name} - using fallback thumbnail`);
         // Return a placeholder or try with full file instead of chunk
-        try {
+        const fullArrayBuffer = await file.arrayBuffer();
-          const fullArrayBuffer = await file.arrayBuffer();
+        return await generatePDFThumbnail(fullArrayBuffer, file, scale);
-          const pdf = await getDocument({
-            data: fullArrayBuffer,
-            disableAutoFetch: true,
-            disableStream: true,
-            verbosity: 0 // Reduce PDF.js warnings
-          }).promise;
-
-          const page = await pdf.getPage(1);
-          const viewport = page.getViewport({ scale });
-          const canvas = document.createElement("canvas");
-          canvas.width = viewport.width;
-          canvas.height = viewport.height;
-          const context = canvas.getContext("2d");
-
-          if (!context) {
-            throw new Error('Could not get canvas context');
-          }
-
-          await page.render({ canvasContext: context, viewport }).promise;
-          const thumbnail = canvas.toDataURL();
-
-          pdf.destroy();
-          return thumbnail;
-        } catch (fallbackError) {
-          console.warn('Fallback thumbnail generation also failed for', file.name, fallbackError);
-          return undefined;
-        }
       } else {
-        console.warn('Failed to generate thumbnail for', file.name, error);
+        console.warn('Unknown error thrown. Failed to generate thumbnail for', file.name, error);
         return undefined;
       }
+    } else {
+      throw error; // Re-throw non-Error exceptions
     }
-    console.warn('Unknown error generating thumbnail for', file.name, error);
-    return undefined;
   }
 }