# Image assets pixelated on frontend after Kirby update

**URL:** <https://forum.getkirby.com/t/image-assets-pixelated-on-frontend-after-kirby-update/29672>\
**Category:** Questions\
**Tags:** v3\
**Created:** [October 4, 2023, 10:12pm UTC](https://forum.getkirby.com/t/image-assets-pixelated-on-frontend-after-kirby-update/29672 "2023-10-04T22:12:47Z")\
**Posts on this page:** 2\
**Page:** 3

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**Author:** ![pixelliquid](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.getkirby.com/pixelliquid/32/10293_2.png) [@pixelliquid](https://forum.getkirby.com/u/pixelliquid)\
**Post date:** [November 8, 2023, 2:32pm UTC](https://forum.getkirby.com/t/image-assets-pixelated-on-frontend-after-kirby-update/29672/41 "2023-11-08T14:32:36Z")

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I got the same pixelated images when updating a local Kirby site from Kirby 3.9 to 4.0.0 beta. Whenever I started out with the Plainkit downloaded from the Kirby site all went fine, but earlier sites already stuffed with templates, blueprints and the works all jpg images went pixelated, not the png ones.  
Following the link @mschmidt posted I found the solution from @pesto : it’s not just replacing the kirby folder in your install, but update the version number in `composer.json` & run `composer install` as well.  
Just for anyone struggling with this 🙂

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**Author:** ![bnomei](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.getkirby.com/bnomei/32/775_2.png) [@bnomei](https://forum.getkirby.com/u/bnomei)\
**Post date:** [January 8, 2024, 3:26pm UTC](https://forum.getkirby.com/t/image-assets-pixelated-on-frontend-after-kirby-update/29672/42 "2024-01-08T15:26:58Z")

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the most likely reason for this is that kirby 4 introduces a major version upgrade for the simple-image lib (composer dependency) that handles a lot of the thumb generation.

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