Workbench

Small, fast tools that run entirely in your browser.

Every tool on this site is a single hand-written HTML file. Nothing tracks you, nothing asks you to sign in, and nothing calls home: no frameworks, no cookies, no network requests. Once a page has loaded, it keeps working offline.

Tools

• Epoch Converter Unix timestamps ↔ human dates, live
• Cron Explainer cron expressions in plain English + next runs
• Checksum Tool SHA-256/384/512/SHA-1 for text & files, no uploads
• Base64 & URL Encoder encode/decode Base64 (UTF-8, URL-safe) and percent-encoding
• JSON Formatter format & validate JSON with exact error positions
• UUID Generator random v4 UUIDs in bulk + an inspector for any UUID

Notes

• Why everything here runs in your browser what client-side means, and how to verify it

About

Workbench is a personal collection of web utilities, built a little at a time. If something here saved you a minute or two, that is the whole point.