About 712 Tools

712 Tools is a small collection of developer utilities — JSON formatting, regex testing, JWT decoding, URL encoding, CSS minifying, HTML beautifying, cron generation — that run entirely in your browser. Nothing is uploaded, nothing is stored, nothing is logged.

Every existing developer-tool site does the same thing, so why another one? Because most of them wrap the tools in aggressive ads and cookie prompts, upload your data to their servers, or gate features behind a signup. The tools here don't.

Everything is open-source-friendly: no proprietary APIs, no backend, no accounts. Bookmark the tools you use, work offline once the page has loaded, and paste production data without worrying about where it ends up.