## AsposePSExtractText function

Extract text from PS file. The text can be extracted only if it is written with Type 42 (TrueType) font or Type 0 font with Type 42 fonts in its Vector Map.

```js
function AsposePSExtractText(
    fileBlob,
    fileName, 
    start,
    end
)
```

| Parameter | Type | Description |
| --------- | ---- | ----------- |
| fileBlob | Blob object | Content of source file. |
| fileName | string | Source file name. |
| start | int | Specifies the page from which to begin to extract text. This parameter is usefull for multi-paged documents. |
| end | int | Specifies the page till which to finish to extract text. This parameter is usefull for multi-paged documents. |

### Return Value

JSON object 
| Field | Description |
| ----- | ----------- |
| errorCode | code error (0 no error)
| errorText | text error ("" no error)
| text | the extracted text

### Examples

```js
  var fPSExtractText = function (e) {
    const file_reader = new FileReader();
    file_reader.onload = (event) => {
      const json = AsposePSExtractText(event.target.result, e.target.files[0].name);
      if (json.errorCode == 0) {
        document.getElementById('output').textContent = "Text:" + json.text;
      }
      else 
        document.getElementById('output').textContent = json.errorText;
    }
    file_reader.readAsArrayBuffer(e.target.files[0]);
  }
```

**Web Worker example**:
```js

  /*Create Web Worker*/
  const AsposePageWebWorker = new Worker("AsposePageforJS.js");
  AsposePageWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
  AsposePageWebWorker.onmessage = evt => document.getElementById('output').textContent = 
    (evt.data == 'ready') ? 'library loaded!' :
      (evt.data.json.errorCode == 0) ? 
        ((evt.data.operation == 'AsposePSExtractText') ? `Text: ${evt.data.json.text}` : `` ) : `Error: ${evt.data.json.errorText}`;

  /*Event handler*/
  const fPSExtractText = e => {
    const file_reader = new FileReader();
    file_reader.onload = event => {
      AsposePageWebWorker.postMessage({ "operation": 'AsposePSExtractText', "params": [event.target.result, e.target.files[0].name] }, [event.target.result]);
    };
    file_reader.readAsArrayBuffer(e.target.files[0]);
  };

```

### See Also

* function [AsposePSGetBoundingBox](../psgetboundingbox/)