Every tool in this collection runs entirely inside your browser. No API keys, no server round trips, no uploads — which means they are fast, private, and keep working when your connection does not.
Measure your WPM and accuracy in 60 seconds
Live counts, reading time and keyword breakdown
Pretty-print, minify and validate JSON instantly
Strong random passwords with live strength scoring
Every percentage question, answered four ways
HEX, RGB, HSL and OKLCH side by side
Resize photos without uploading them anywhere
Combine several PDFs into one, privately
Tracking-free QR codes that never expire
Metres, feet, miles and eleven more units
SHA-1, SHA-256, SHA-384 and SHA-512 checksums
Switch text between eight naming and writing cases
More sets
The ten tools people reach for most
Daily utilities that never phone home
Write, check, optimise and publish
Model a decision before you make it
