diff --git a/public/functions/shared/detectEmptyPages.js b/public/functions/shared/detectEmptyPages.js
index 2ee792b7..41385fd6 100644
--- a/public/functions/shared/detectEmptyPages.js
+++ b/public/functions/shared/detectEmptyPages.js
@@ -29,7 +29,7 @@ export async function detectEmptyPages(snapshot, whiteThreashold, PDFJS, OpenCV)
     }
 
     async function areImagesBlank(page, threshold) {
-        const images = getImagesOnPage(page, PDFJS);
+        const images = await getImagesOnPage(page, PDFJS);
         for (const image of images) {
             if(!isImageBlank(image, threshold))
                 return false;
@@ -37,7 +37,7 @@ export async function detectEmptyPages(snapshot, whiteThreashold, PDFJS, OpenCV)
         return true;
     }
     
-    async function isImageBlank(image, threshold) {
+    function isImageBlank(image, threshold) {
         const src = new OpenCV.cv.Mat(image.width, image.height, OpenCV.cv.CV_8UC4);
         src.data.set(image.data);
         // Convert the image to grayscale
diff --git a/public/functions/splitOn.js b/public/functions/splitOn.js
index 148fb106..9c3dbb23 100644
--- a/public/functions/splitOn.js
+++ b/public/functions/splitOn.js
@@ -1,5 +1,6 @@
 import { detectEmptyPages } from "./shared/detectEmptyPages.js";
 import { getImagesOnPage } from "./shared/getImagesOnPage.js";
+import { createSubDocument } from "./shared/createSubDocument.js";
 
 /**
  * @typedef {"BAR_CODE"|"QR_CODE"|"BLANK_PAGE"} SplitType
@@ -39,18 +40,42 @@ export async function splitOn(snapshot, type, whiteThreashold, PDFJS, OpenCV, PD
 
     console.log("Split At Pages: ", splitAtPages);
 
+    // Remove detected Pages & Split
     const pdfDoc = await PDFLib.PDFDocument.load(snapshot);
 
-    // TODO: Remove detected Pages & Split
+    const numberOfPages = pdfDoc.getPages().length;
 
-    return pdfDoc.save();
+    let pagesArray = [];
+    let splitAfter = splitAtPages.shift();
+    const subDocuments = [];
+
+    for (let i = 0; i < numberOfPages; i++) {
+        console.log(i);
+        if(i == splitAfter) {
+            if(pagesArray.length > 0) {
+                subDocuments.push(await createSubDocument(pdfDoc, pagesArray, PDFLib));
+                pagesArray = [];
+            }
+            splitAfter = splitAtPages.shift();
+        }
+        else { // Skip splitAtPage
+            console.log("PagesArray")
+            pagesArray.push(i);
+        }
+    }
+    if(pagesArray.length > 0) {
+        subDocuments.push(await createSubDocument(pdfDoc, pagesArray, PDFLib)); 
+    }
+    pagesArray = [];
+
+    return subDocuments;
 
     async function getPagesWithQRCode(snapshot) {
         const pdfDoc = await PDFJS.getDocument(snapshot).promise;
 
         const pagesWithQR = [];
-        for (let i = 1; i <= pdfDoc.numPages; i++) {
-            const page = await pdfDoc.getPage(i);
+        for (let i = 0; i < pdfDoc.numPages; i++) {
+            const page = await pdfDoc.getPage(i + 1);
             console.log("Checking page " + i);
 
             const images = await getImagesOnPage(page, PDFJS);
diff --git a/public/traverseOperations.js b/public/traverseOperations.js
index 48bc0d07..a831c2f9 100644
--- a/public/traverseOperations.js
+++ b/public/traverseOperations.js
@@ -93,8 +93,7 @@ export async function * traverseOperations(operations, input, Functions) {
                             buffer: splitResult[j]
                         })
                     }
-    
-                    input = splits;
+                    return splits;
                 });
                 break;
             case "editMetadata":
@@ -117,8 +116,17 @@ export async function * traverseOperations(operations, input, Functions) {
                 break;
             case "splitOn":
                 yield* oneToN(input, operation, async (input) => {
-                    input.fileName += "_split";
-                    input.buffer = await Functions.splitOn(input.buffer, operation.values["type"], operation.values["whiteThreashold"]);
+                    const splitResult = await Functions.splitOn(input.buffer, operation.values["type"], operation.values["whiteThreashold"]);
+                    const splits = [];
+                    for (let j = 0; j < splitResult.length; j++) {
+                        splits.push({
+                            originalFileName: input.originalFileName,
+                            fileName: input.fileName + "_split" + j,
+                            buffer: splitResult[j]
+                        })
+                    }
+    
+                    return splits;
                 });
                 break;
             default:
@@ -138,13 +146,14 @@ export async function * traverseOperations(operations, input, Functions) {
 
     async function * oneToN(input, operation, callback) {
         if(Array.isArray(input)) {
+            let output = [];
             for (let i = 0; i < input.length; i++) {
-                await callback(input[i]);
+                output = output.concat(await callback(input[i]));
             }
-            yield* nextOperation(operation.operations, input);
+            yield* nextOperation(operation.operations, output);
         }
         else {
-            await callback(input);
+            input = await callback(input);
             yield* nextOperation(operation.operations, input);
         }
     }