Guide

Playground

Every tool in your browser with the CLI line and the tool call for every state

The playground runs the library in this page. Compress, decompress, identify and list, with the same executors the MCP server runs.

Pick a tool, pick a format and a container, type. The answer shows up a moment after you stop. Underneath it you get the CLI line and the JSON a model would send for the same call, both ready to copy.

zstd and brotli are read only, so the playground starts them on a stream their own CLIs wrote. Decompress it, change a byte, watch the checksum complain.

Every state is a link

The address bar follows the form. ?op=identify&data=H4sIAAAAAAAA/8tIzcnJVyjPL8pJUQQAbcK0AwwAAAA= opens straight on that question. Add peel=true for nested layers, or op=decompress&format=deflate&container=gzip to open it. Share it, bookmark it, paste it into an issue.

Nothing leaves the tab

No server reads what you paste. The blob from the puzzle you're stuck on stays with you.

ID@agntn/compressionsv0.0.0MIT license

Every byte on this site is compressed and decompressed in your tab. No network call, no server reading your input. Paste that mystery string from the puzzle, it stays with you.