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QR scanner
Scan a QR code with your camera or from a screenshot, and see what's inside before you open it.
Color blindness simulator
See an image or a set of colors the way people with red, green or blue color blindness do.
Aspect ratio calculator
Simplify any size to its ratio, and resize to a ratio without doing the math.
Date difference
Count the years, months, days and weekdays between two dates, or add days to a date.
CSV to JSON
Convert CSV to JSON and back, with quoted fields, delimiter detection and typed values.
Number base converter
Convert whole numbers between binary, octal, decimal, hex and any base up to 36.
Color palette
Turn one color into a full 50-950 scale and matching harmonies, then export it as CSS or Tailwind.
Markdown preview
Write Markdown with GitHub's extras and see it rendered live, then copy the HTML.
Unit converter
Convert length, weight, temperature, volume, area, speed, data and time, all at once.
Hash generator
Get MD5, SHA-1, SHA-256, SHA-384 and SHA-512 of text or a file, and check it against a hash.
Crontab editor
Build a cron schedule by clicking, read it in plain English, and see exactly when it runs next.
JWT decoder
Read a JSON Web Token's header and claims, see when it expires, and check an HMAC signature.
UUID generator
Make UUID v4, v7 or ULID IDs in bulk, and inspect any ID to see its version and timestamp.
Text diff
Compare two texts line by line, with the changed words highlighted.
Image compressor
Shrink and resize images to WebP, AVIF or JPEG right in your browser; nothing is uploaded.
Regex tester
Test a regular expression live, see every match and group, and read it in plain English.
Encode & decode
Convert text to and from Base64, URL encoding and HTML entities.
Contrast checker
Check two colors against WCAG AA and AAA, and get the nearest color that passes.
Word counter
Count words and characters, see reading time, and check social post limits.
Time zones
Find a meeting time that works across cities, hour by hour.
JSON formatter
Pretty-print, minify and sort JSON, with errors pointed out by line.
QR code maker
Turn a link, text or Wi-Fi login into a QR code you can download.
Password generator
Make a strong random password; it never leaves your browser.
Timestamps
Convert Unix timestamps to dates and back, in UTC and your time zone.
Random color
Roll a random color and copy it as hex, RGB or HSL.
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