heydeer/slimdeer
CLI tool
Can I trust it?
No red flags in our checks.
Stars from real accounts No data
We haven't checked its stars for fakes yet.
Active OK
Last change 4 days ago.
Licence OK
MIT: you can use it for free, also in a commercial product. Keep the licence notice.
Quick checks from public data. They help, but they are no guarantee.
What it is
Lossy PNG compressor with no quality slider. It searches palette sizes and dithering options, scores each result with SSIMULACRA2, and keeps the smallest file that still looks right. Available as a command-line tool and as a browser app that runs locally via WebAssembly.
Who it's for
Developers and designers who need smaller PNG files without manually tuning quality settings
How to use it
Install
brew install heydeer/tap/pngdeerFrom its README. Check it there before running it.
Ask your AI to set it up
Paste this into Claude, ChatGPT or your coding assistant.
Help me install and set up heydeer/slimdeer in my project. Follow its README: https://github.com/heydeer/slimdeer. Explain each step and check it is safe before running anything.
Star curve
On the radar
Its place among the radar's top 100, day by day, with #1 at the top. Gaps are days it was out of the top 100.
Records
- Best place on RepoAlerts: #77, on 27 Oct 2026
Alternatives
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