AsposePdfFindText

Find text in a PDF-file.

function AsposePdfFindText(
    fileBlob,
    fileName,
    findText
)

Parameters:

  • fileBlob Blob object
  • fileName file name
  • findText text fragment to search

Return:

JSON object

  • errorCode - code error (0 no error)
  • errorText - text error ("" no error)
  • textFragments - array of :
    • text - text fragment
    • xIndent - X coordinate
    • yIndent - Y coordinate
    • fontName - font name
    • fontSize - font size

Web Worker example:

  /*Create Web Worker*/
  const AsposePDFWebWorker = new Worker("AsposePDFforJS.js");
  AsposePDFWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
  AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent = 
    (evt.data == 'ready') ? 'loaded!' :
      (evt.data.json.errorCode == 0) ? `textFragments:\n${JSON.stringify(evt.data.json.textFragments, null, 4)}` : `Error: ${evt.data.json.errorText}`; 

  /*Event handler*/
  const ffilePdfFindText = e => {
    const file_reader = new FileReader();
    file_reader.onload = event => {
      /*Find text in a PDF-file - Ask Web Worker*/
      AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfFindText', "params": [event.target.result, e.target.files[0].name, "Aspose"] }, [event.target.result]);
    };
    file_reader.readAsArrayBuffer(e.target.files[0]);
  };

Simple example:

  var ffilePdfFindText = function (e) {
    const file_reader = new FileReader();
    file_reader.onload = (event) => {
      /*Find text in a PDF-file*/
      const json = AsposePdfFindText(event.target.result, e.target.files[0].name, "Aspose");
      if (json.errorCode == 0) document.getElementById('output').textContent = "JSON:\n" + JSON.stringify(json, null, 4);
      else document.getElementById('output').textContent = json.errorText;
    };
    file_reader.readAsArrayBuffer(e.target.files[0]);
  };