V2: Convert Tool (#3828)

🔄 Dynamic Processing Strategies

- Adaptive routing: Same tool uses different backend endpoints based on
file analysis
- Combined vs separate processing: Intelligently chooses between merge
operations and individual file processing
- Cross-format workflows: Enable complex conversions like "mixed files →
PDF" that other tools can't handle

  ⚙️ Format-Specific Intelligence

  Each conversion type gets tailored options:
  - HTML/ZIP → PDF: Zoom controls (0.1-3.0 increments) with live preview
  - Email → PDF: Attachment handling, size limits, recipient control
  - PDF → PDF/A: Digital signature detection with warnings
  - Images → PDF: Smart combining vs individual file options

 File Architecture

  Core Implementation:
  ├── Convert.tsx                     # Main stepped workflow UI
├── ConvertSettings.tsx # Centralized settings with smart detection
├── GroupedFormatDropdown.tsx # Enhanced format selector with grouping
├── useConvertParameters.ts # Smart detection & parameter management
  ├── useConvertOperation.ts         # Multi-strategy processing logic
  └── Settings Components:
      ├── ConvertFromWebSettings.tsx      # HTML zoom controls
      ├── ConvertFromEmailSettings.tsx    # Email attachment options
├── ConvertToPdfaSettings.tsx # PDF/A with signature detection
      ├── ConvertFromImageSettings.tsx    # Image PDF options
      └── ConvertToImageSettings.tsx      # PDF to image options

 Utility Layer

  Utils & Services:
├── convertUtils.ts # Format detection & endpoint routing
  ├── fileResponseUtils.ts          # Generic API response handling
└── setupTests.ts # Enhanced test environment with crypto mocks

  Testing & Quality

  Comprehensive Test Coverage

  Test Suite:
├── useConvertParameters.test.ts # Parameter logic & smart detection
  ├── useConvertParametersAutoDetection.test.ts  # File type analysis
├── ConvertIntegration.test.tsx # End-to-end conversion workflows
  ├── ConvertSmartDetectionIntegration.test.tsx  # Mixed file scenarios
  ├── ConvertE2E.spec.ts                     # Playwright browser tests
├── convertUtils.test.ts # Utility function validation
  └── fileResponseUtils.test.ts              # API response handling

  Advanced Test Features

  - Crypto API mocking: Proper test environment for file hashing
  - File.arrayBuffer() polyfills: Complete browser API simulation
  - Multi-file scenario testing: Complex batch processing validation
- CI/CD integration: Vitest runs in GitHub Actions with proper artifacts

---------

Co-authored-by: Connor Yoh <connor@stirlingpdf.com>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>

frontend/package.json

@@ -37,7 +37,13 @@
     "dev": "vite",
     "build": "vite build",
     "preview": "vite preview",
-    "generate-licenses": "node scripts/generate-licenses.js"
+    "generate-licenses": "node scripts/generate-licenses.js",
+    "test": "vitest",
+    "test:watch": "vitest --watch",
+    "test:coverage": "vitest --coverage",
+    "test:e2e": "playwright test",
+    "test:e2e:ui": "playwright test --ui",
+    "test:e2e:install": "playwright install"
   },
   "eslintConfig": {
     "extends": [
@@ -58,15 +64,19 @@
     ]
   },
   "devDependencies": {
+    "@playwright/test": "^1.40.0",
     "@types/react": "^19.1.4",
     "@types/react-dom": "^19.1.5",
     "@vitejs/plugin-react": "^4.5.0",
+    "@vitest/coverage-v8": "^1.0.0",
+    "jsdom": "^23.0.0",
     "license-checker": "^25.0.1",
     "postcss": "^8.5.3",
     "postcss-cli": "^11.0.1",
     "postcss-preset-mantine": "^1.17.0",
     "postcss-simple-vars": "^7.0.1",
     "typescript": "^5.8.3",
-    "vite": "^6.3.5"
+    "vite": "^6.3.5",
+    "vitest": "^1.0.0"
   }
 }