# Does Discourse used optimized versions of uploads?

**URL:** https://meta.discourse.org/t/does-discourse-used-optimized-versions-of-uploads/393939
**Category:** Support
**Created:** [January 20, 2026, 10:55pm UTC](https://meta.discourse.org/t/does-discourse-used-optimized-versions-of-uploads/393939 "2026-01-20T22:55:29Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![hipp0](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/hipp0/32/537433_2.png) [@hipp0](https://meta.discourse.org/u/hipp0)
#### Post date: [January 20, 2026, 10:55pm UTC](https://meta.discourse.org/t/does-discourse-used-optimized-versions-of-uploads/393939/1 "2026-01-20T22:55:29Z")

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I have S3 + cloudflare CDN setup. I am wondering if Discourse is using the full rez image or a compress optimize version shown on the forum post.

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### Author: ![NateDhaliwal](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/natedhaliwal/32/313494_2.png) [@NateDhaliwal](https://meta.discourse.org/u/NateDhaliwal)
#### Post date: [January 20, 2026, 11:59pm UTC](https://meta.discourse.org/t/does-discourse-used-optimized-versions-of-uploads/393939/2 "2026-01-20T23:59:30Z")

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Discourse compresses images to save space. See:

> [@Faster (and smaller) uploads in Discourse with Rust, WebAssembly and MozJPEG | Blog](https://meta.discourse.org/t/faster-and-smaller-uploads-in-discourse-with-rust-webassembly-and-mozjpeg-blog/196998/):
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> As of a few weeks ago, image uploads in Discourse are faster AND smaller thanks to a technique that compresses and optimizes the images clientside before they are uploaded. This blog post will describe how this feature works and how we implemented it in Discourse. This is a companion discussion topic for the original entry at [https://blog.discourse.org/2021/07/faster-user-uploads-on-discourse-with-rust-webassembly-and-mozjpeg/](https://blog.discourse.org/2021/07/faster-user-uploads-on-discourse-with-rust-webassembly-and-mozjpeg/)

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### Author: ![system](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/system/32/443519_2.png) [@system](https://meta.discourse.org/u/system)
#### Post date: [February 19, 2026, 11:59pm UTC](https://meta.discourse.org/t/does-discourse-used-optimized-versions-of-uploads/393939/3 "2026-02-19T23:59:35Z")

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