Smlr – re-encode jpegs using butteraugli visual quality measurement
Re-encode jpeg images with no perceivable quality loss. - jasonmoo/smlr
Smlr – re-encode jpegs using butteraugli visual quality measurement launched on May 10, 2016 with 53 votes, #1,520 of 3,824 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 10 years on.
In plain words
Smlr is a tool that re-encodes JPEG images using butteraugli visual quality measurement to maintain visual fidelity while reducing file size. It targets photographers and developers who need to optimize image files without noticeable quality degradation. The tool uses perceptual quality metrics rather than traditional compression methods, allowing users to achieve smaller file sizes by measuring what the human eye can actually detect rather than relying on standard compression thresholds.
written from the facts on this page · September 2026
Does a similar job
all alternatives →- JIJpeg.io – Convert any major image format into a highly optimized JPEG2016 · jpeg.io · ▲122
Convert any major image format into a highly optimized JPEG
Mozjpeg encoder – smaller jpegs for everyone2014 · mozjpeg.codelove.de · ▲23online converter for jpegs using the mozjpeg encoder
A pure WebGL image editor with filters, crop and perspective correction2025 · github.com · ▲243I'm working on a pure js webgl image editor with effects, filters, crop & perspective correction, etc. My goal is to give the community an opensource solution as unfortunately most comparable apps are closed sources. https://mini2-photo-editor.netlify.app to try it out (https://github.com/xdadda/mini-photo-editor)
- IBI built an image optimization tool based on Google's new Jpegli encoder2024 · optimize.photos · ▲11
Compress high quality JPEG images 35% more than traditional codecs.
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