Text & Web Utilities

Strong random passwords generated in your browser, with the entropy behind the strength rating.

Links, Wi-Fi, contact cards and seven more — styled, checked for scannability, and sized for the printer.

Characters as a human counts them and as a computer stores them, against each platform limit.

Ten casing styles including a Title Case that keeps short function words lowercase.

Clean URL slugs that transliterate letters instead of silently deleting them.

Cryptographic random numbers with rejection sampling, so no value is quietly favoured.

Placeholder paragraphs, sentences or words from the Cicero passage the text actually comes from.

Epoch seconds to a readable date and back, in UTC and in your own time zone.

Numbers to Roman numerals and back, using the standard subtractive notation.

Binary, octal, decimal and hex side by side, plus any base from 2 to 36.

Encode text to Base64 or decode it back, with the URL-safe alphabet as an option.

Percent-encode a query value or decode one, with the component and full-URL rules kept apart.

Pretty-print or minify JSON, with the parse error pointed at the line that broke it.

Version 4 UUIDs from the browser cryptographic random source, in bulk if you need them.

HEX, RGB and HSL of the same color at once, with the contrast against black and white.

Hold a ratio while you change one side, and see the simplified ratio of any size.