> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/get-started/samples/recttest.md).

# Media Box Manipulation - Sample code

Sample JavaScript code for using Apryse SDK to change a page's MediaBox using Rect class.

{% hint style="info" %}
**Requirements**

*These packages are required to use these features in production. Trial keys have unlimited access to all features*

<a href="/web/get-started/readme.md" class="button primary">Web SDK</a><a href="/web/full-api/full-api-overview.md" class="button primary">Full API</a>
{% endhint %}

Sample JavaScript code for using Apryse SDK to change a page's MediaBox using Rect class. This sample works with [Full-API for WebViewer](/web/full-api/full-api-overview.md).

Learn more about our [Web SDK](/web/get-started/guides.md) and [PDF Editing & Manipulation Library](/core/page-manipulation/manipulation.md).

<pre class="language-js" data-line-numbers><code class="lang-js">//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2023 by Apryse Software Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

(exports => {
  exports.runRectTest = () => {
    const PDFNet = exports.Core.PDFNet;

    const main = async () => {
      let ret = 0;
      try {
        console.log('Beginning Rect Test. This test will take the rect box of an image and move/translate it');

        const inputPath = '../TestFiles/';
        const doc = await PDFNet.PDFDoc.createFromURL(inputPath + 'tiger.pdf');
        doc.initSecurityHandler();
        doc.lock();
        console.log('PDF document initialized and locked');

        const pgItr1 = await doc.getPageIterator();
        const mediaBox = await (await pgItr1.current()).getMediaBox();
        mediaBox.x1 -= 200; // translate page 200 units left(1 uint = 1/72 inch)
        mediaBox.x2 -= 200;

        await mediaBox.update();

        const docbuf = await doc.saveMemoryBuffer(PDFNet.SDFDoc.SaveOptions.e_linearized);
        saveBufferAsPDFDoc(docbuf, 'tiger_shift.pdf');
        console.log('Done.');
      } catch (err) {
        console.log(err);
        ret = 1;
      }
      return ret;
    };
    // add your own license key as the second parameter, e.g. PDFNet.runWithCleanup(main, '<code class="expression">visitor.claims.wvKey || "YOUR_LICENSE_KEY"</code>')
    PDFNet.runWithCleanup(main);
  };
})(window);
// eslint-disable-next-line spaced-comment
//# sourceURL=AnnotationTest.js
</code></pre>


---

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