FastMinify is a free, open-source toolbox of 190+ developer tools that run entirely in your browser. Minify, beautify, convert, validate and generate code or data — nothing is uploaded, no account required.

It started as a minifier for JS, CSS, HTML, JSON and more. Today it also covers converters (JSON, YAML, XML, CSV, SQL…), formatters, SVG tools, DevOps and CI checks, API schema utilities, and everyday helpers like JWT, Base64, cron and UUID.

Paste your input, get an instant local result, copy or download. Built for developers who want speed and privacy without installing a CLI or sending snippets to a SaaS.

190+ tools, one hub
100% browser-local processing
Free, no signup

FastMinify

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