All 53 tools across 12 categories. Every one is free, needs no account, and processes your data inside your own browser rather than on a server. Jump to a category below, or use the search in the header — it is faster than scrolling.
Measure, practise and perfect your keyboard speed
Measure your WPM and accuracy in 60 seconds
Untimed drills with live word-by-word feedback
Visual keyboard with live key and finger hints
A full-screen, distraction-free writing surface
Long-form typing practice with progress tracking
Clean, count, convert and reshape any text
Live counts, reading time and keyword breakdown
Switch text between eight naming and writing cases
Compare two texts and highlight every change
Placeholder text by paragraph, sentence or word
Strip repeated lines from any list instantly
Sort, reverse and shuffle lines of text
Turn any title into a clean, SEO-friendly URL
Merge, split and build PDFs without uploading them
Resize, compress and convert images in the browser
Formatters, encoders and inspectors that stay offline
Pretty-print, minify and validate JSON instantly
Strong random passwords with live strength scoring
Convert text to Base64 and back, safely
Inspect a token's header, payload and expiry
Test patterns with live match highlighting
Percent-encode query strings correctly
SHA-1, SHA-256, SHA-384 and SHA-512 checksums
Cryptographically random v4 identifiers in bulk
Escape HTML safely, or decode entities back
Clear answers to everyday numerical questions
Every percentage question, answered four ways
Monthly repayments and total interest, broken down
Body mass index in metric or imperial units
See how savings grow with regular contributions
Exact age in years, months, days and beyond
Sale prices, savings and stacked discounts
Planning and pricing utilities for small teams
Study, grading and productivity helpers
On-page analysis without external APIs
Complete head tags including Open Graph
See how your page will look in Google results
Word frequency and phrase analysis for any text
Valid crawler rules without the syntax errors
Convert, pair and check colours with confidence
HEX, RGB, HSL and OKLCH side by side
WCAG 2.2 pass or fail, at every text size
Harmonious palettes from a single base colour
Build gradients and copy the CSS
Precise conversion across every common measure
Metres, feet, miles and eleven more units
Celsius, Fahrenheit and Kelvin at once
Kilograms, pounds, stone, ounces and more
Bytes to terabytes, decimal and binary
mph, km/h, knots, m/s and mach
Generate scannable codes that never expire
