Is there a free, open-source alternative to TinyPNG?

Yes. The most popular open-source alternatives to TinyPNG on Repolode are imgcompress, caesium-app-web.

Which TinyPNG alternative should I choose?

imgcompress has the most GitHub stars and is released under GPL-3.0. Compare the license and last commit of each option in the table above before choosing.

2 alternatives

Best open-source alternatives to TinyPNG (2026)

Looking for a free, open-source alternative to TinyPNG? These 2 projects can replace it. Each one is reviewed by a human and explained in plain words, so you can compare stars, license and maintenance at a glance.

Quick comparison

Project	Stars	License	Last commit
karimz1/imgcompress	★ 346	GPL-3.0	2 days ago
Lymphatus/caesium-app-web	★ 128	MIT	4 months ago

karimz1 / imgcompress

GitHub

Self-hosted Docker web app for converting 70+ image formats, bulk compression, per-file cropping, and local AI background removal.

Productivity & Apps #image-processing #image-compression #image-conversion #background-removal #self-hosted

34634TypeScriptGPL-3.0Updated 2 days ago

Lymphatus / caesium-app-web

GitHub

A browser-based image compressor for JPG, PNG and WebP that works fully offline, with no uploads to any server.

Productivity & Apps #image-compression #webassembly #browser #offline #privacy

12817JavaScriptMITUpdated 4 months ago

FAQ

Is there a free, open-source alternative to TinyPNG?: Yes. The most popular open-source alternatives to TinyPNG on Repolode are imgcompress, caesium-app-web.
Which TinyPNG alternative should I choose?: imgcompress has the most GitHub stars and is released under GPL-3.0. Compare the license and last commit of each option in the table above before choosing.

← Open-source alternatives to popular software