Developer tools

Eight small tools that do their work in your browser. No accounts, no uploads, no analytics — each one keeps working with no connection once you have opened it, and can be installed like an app. Free, for anything lawful.

QR Essentials Create and scan QR codes GUID Essentials UUIDs, ULIDs and NanoIDs Token Essentials Decode and verify JWTs Hash Essentials Checksums for text and files Pass Essentials Passwords and passphrases Time Essentials Timestamps, zones and cron Colour Essentials Convert, contrast and palettes Photo Privacy Strip EXIF and blur faces

Every one of these runs on your device. Nothing you type, open or generate is sent anywhere — there is no server to send it to. Each tool says exactly what it keeps on its own privacy page.