# Manage zoom in mobile using pinch

**URL:** <https://pdfjs.community/t/manage-zoom-in-mobile-using-pinch/1523>\
**Category:** Technical Support\
**Tags:** pdfjs-express\
**Created:** [March 30, 2022, 9:40am UTC](https://pdfjs.community/t/manage-zoom-in-mobile-using-pinch/1523 "2022-03-30T09:40:57Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![luis.perezsanchez](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/luis.perezsanchez/32/726_2.png) [@luis.perezsanchez](https://pdfjs.community/u/luis.perezsanchez)\
**Post date:** [March 30, 2022, 9:40am UTC](https://pdfjs.community/t/manage-zoom-in-mobile-using-pinch/1523/1 "2022-03-30T09:40:57Z")

</div>

**Which product are you using?**  
PDF.js Express Plus

**PDF.js Express Version**  
8.x.x

**Detailed description of issue**  
I cannot find how to manage the zoom events produced by pinching in mobile.  
I have read that it should work out of the box. But it’s not my case.

I have tried on Android and IOS and the result is the same.

Our PDFs have to be compiled so there are forms present, I don’t know if this can cause a problem.

Do you have an example or snippet?

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