Aspose.PDF for JavaScript via C++ 26.1

Author: OleksandrAndriienko

AsposePDFforJS.js

@@ -59,6 +59,7 @@ Add PDF processing, manipulation, and conversion features to your front-end appl
 - **Attachments:** Add, extract, or delete file attachments.
 - **Text Tools:**
   - Find, replace, or delete text (including hidden text)
+  - Replace multiple text fragments with alignment control
   - Get word and character counts
 
 ## Additional Utilities

AsposePDFforJS.wasm.zip

@@ -320,6 +320,10 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
         <label for="filePdfDeleteTextFooters">DEL FOOTERS<span class="tooltip">Delete text footers from a PDF-file</span></label>
         <input type="file" id="filePdfDeleteTextFooters" accept="application/pdf" onchange="ffilePdfDeleteTextFooters(event)">
       </div>
+      <div class="column">
+        <label for="filePdfReplaceTextEx">REPLACE TEXT EX<span class="tooltip">Replace multiple text fragments in a PDF-file with alignment control</span></label>
+        <input type="file" id="filePdfReplaceTextEx" accept="application/pdf" onchange="ffilePdfReplaceTextEx(event)">
+      </div>
     </div>
   </div>
 
@@ -1365,6 +1369,17 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
     file_reader.readAsArrayBuffer(e.target.files[0]);
   };
 
+  var ffilePdfReplaceTextEx = function (e) {
+    const file_reader = new FileReader();
+    file_reader.onload = (event) => {
+      const json = AsposePdfReplaceTextEx(event.target.result, e.target.files[0].name, [{findText: "PDF",replaceText: "pdf"}], {numPages: 1, alignment: "auto"}, "ResultPdfReplaceTextEx.pdf");
+      if (json.errorCode == 0) document.getElementById('output').textContent = json.fileNameResult;
+      else document.getElementById('output').textContent = json.errorText;
+      DownloadFile(json.fileNameResult, "application/pdf");
+    }
+    file_reader.readAsArrayBuffer(e.target.files[0]);
+  }
+
 </script>
 
 <script>

README.md

@@ -100,6 +100,7 @@
       <option value="AsposePdfCropPages">Crop PDF-pages</option>
       <option value="AsposePdfDeleteTextHeaders">Delete text headers from a PDF-file</option>
       <option value="AsposePdfDeleteTextFooters">Delete text footers from a PDF-file</option>
+      <option value="AsposePdfReplaceTextEx">Replace multiple text fragments in a PDF-file with alignment control</option>
 
     <optgroup label="Metadata PDF">
       <option value="AsposePdfSetInfo">Set info (metadata) in a PDF-file</option>
@@ -337,7 +338,7 @@
             // AsposePdfReplaceFont, AsposePdfDeleteHiddenText, AsposePdfAddWatermark, AsposePdfDeleteWatermarks,
             // AsposePdfMergeLayers, AsposePdfFlatten, AsposePdfReplaceTextPages, AsposePdfMakeBooklet,
             // AsposePdfMakeNUp, AsposePdfDeleteBlankPages, AsposePdfAddStampPages, AsposePdfEmbedFonts, AsposePdfUnembedFonts,
-            // AsposePdfOptimizeFileSize, AsposePdfDeleteTables, AsposePdfCropPages,
+            // AsposePdfOptimizeFileSize, AsposePdfDeleteTables, AsposePdfCropPages, AsposePdfReplaceTextEx,
             DownloadFile(json.fileNameResult, "application/pdf", params[0]);
         }
       }
@@ -670,6 +671,24 @@
           transfer = [event.target.result];
           params = [event.target.result, ffile.name, marginPages, `Result${operation}.pdf`];
           break;
+        case 'AsposePdfReplaceTextEx':
+          const findReplaceSpec = [
+                {
+                findText: 'Aspose',
+                replaceText: 'ASPOSE'
+                },
+                {
+                findText: 'PDF',
+                replaceText: 'pdf'
+                },
+                {
+                findText: 'ECMAScript',
+                replaceText: '\u200FScript'
+                }
+          ];
+          transfer = [event.target.result];
+          params = [event.target.result, ffile.name, findReplaceSpec, {alignment: "auto"}, `Result${operation}.pdf`];
+          break;
         default:
           // AsposePdfOptimize, AsposePdfAddPageNum, AsposePdfConvertToGrayscale, AsposePdfAConvertToPDF,
           // AsposePdfRemoveMetadata, AsposePdfRepair, AsposePdfOptimizeResource, AsposePdfDeleteAnnotations,

example.html

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta charset="UTF-8">
+  <title>Aspose.PDF for JavaScript via C++</title>
+</head>
+
+<body>
+  <label for="fileReplaceTextEx">Choose a PDF-file to replace multiple text fragments with alignment control</label>
+  <input type="file" id="fileReplaceTextEx" accept="application/pdf" onchange="ffileReplaceTextEx(event)">
+  <br>
+  <pre id="output"></pre>
+</body>
+<!-- Load and initiate Aspose.PDF for JavaScript via C++ -->
+<script type="text/javascript" async src="AsposePDFforJS.js"></script>
+<script type="text/javascript">
+/// [Code snippet]
+  var ffileReplaceTextEx = function (e) {
+    const file_reader = new FileReader();
+    file_reader.onload = (event) => {
+      /*RReplace multiple text fragments in a PDF-file with alignment control and save the "ResultReplaceTextEx.pdf"*/
+      const json = AsposePdfReplaceTextEx(event.target.result, e.target.files[0].name, [{findText: 'Aspose',replaceText: 'ASPOSE'}], {alignment: "left"}, "ResultReplaceTextEx.pdf");
+      if (json.errorCode == 0) document.getElementById('output').textContent = json.fileNameResult
+      else document.getElementById('output').textContent = json.errorText;
+      /*Make a link to download the result file*/
+      DownloadFile(json.fileNameResult, "application/pdf");
+    };
+    file_reader.readAsArrayBuffer(e.target.files[0]);
+  };
+/// [Code snippet]
+</script>
+
+</html>

example_worker.html

@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <meta charset="UTF-8">
+  <title>Aspose.PDF for JavaScript via C++</title>
+</head>
+
+<body>
+  <label for="fileReplaceTextEx">Choose a PDF-file to replace multiple text fragments with alignment control</label>
+  <input type="file" id="fileReplaceTextEx" accept="application/pdf" onchange="ffileReplaceTextEx(event)">
+  <br>
+  <pre id="output">please wait for loading...</pre>
+</body>
+
+<script type="text/javascript">
+/// [Code snippet]
+  /*Create Web Worker*/
+  const AsposePDFWebWorker = new Worker("AsposePDFforJS.js");
+  AsposePDFWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
+  AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent = 
+    (evt.data == 'ready') ? 'loaded!' :
+      (evt.data.json.errorCode == 0) ? `Result:\n${DownloadFile(evt.data.json.fileNameResult, "application/pdf", evt.data.params[0])}` : `Error: ${evt.data.json.errorText}`;
+
+  /*Event handler*/
+  const ffileReplaceTextEx = e => {
+    const file_reader = new FileReader();
+    file_reader.onload = event => {
+      const findReplaceSpec = [
+            {
+            findText: 'Aspose',
+            replaceText: 'ASPOSE'
+            },
+            {
+            findText: 'Node',
+            replaceText: 'NODE'
+            },
+            {
+            findText: 'ECMAScript',
+            replaceText: '\u200FScript'
+            }
+      ];
+      const optionsText = {numPages: 1, alignment: "auto"};
+      /*Replace multiple text fragments in a PDF-file with alignment control and save the "ResultReplaceTextEx.pdf" - Ask Web Worker*/
+      AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfReplaceTextEx', "params": [event.target.result, e.target.files[0].name, findReplaceSpec, optionsText, "ResultReplaceTextEx.pdf"] }, [event.target.result]);
+    };
+    file_reader.readAsArrayBuffer(e.target.files[0]);
+  };
+/// [Code snippet]
+
+  /*Make a link to download the result file*/
+  const DownloadFile = (filename, mime, content) => {
+      mime = mime || "application/octet-stream";
+      var link = document.createElement("a"); 
+      link.href = URL.createObjectURL(new Blob([content], {type: mime}));
+      link.download = filename;
+      link.innerHTML = "Click here to download the file " + filename;
+      document.body.appendChild(link); 
+      document.body.appendChild(document.createElement("br"));
+      return filename;
+    }
+</script>
+
+</html>