Formatter

Every working day has a messy middle: a minified JSON blob at 11 p.m., a JWT nobody can read, a timestamp that might be 2009 or might be next Tuesday, a regex that almost works. Formatter is the quiet little workshop for all of it: 125 developer tools on 18 tidy shelves, all of them fast and all of them running entirely inside your browser.

Beautify and diff JSON. Decode and verify JWTs. Test a regex and get it explained in plain English. Run real SQL over a CSV, real Python in the page, and real OpenSCAD in 3D. Sketch Mermaid and Graphviz diagrams, build cron schedules, plan meetings across time zones, check colour contrast, generate mock data, QR codes, Dockerfiles and more. When one tool isn't enough, Pipelines chain them: redact a log, then prove nothing leaked, in one click.

What it leaves out matters just as much. No accounts, no uploads, no tracking. Your data never leaves the tab, share links travel in the URL fragment, and once it has loaded it keeps working with the Wi-Fi switched off.

Press ⌘K, type what you need, and get back to the interesting part of your day.