Blog
- New: a UUID generator that makes bulk generation painless
Generate RFC 4122 version 4 UUIDs one at a time or in bulk (1–100), with an uppercase option and one-click copy-all — powered by the browser's native crypto.randomUUID().
2026-08-13 - New: a URL encoder/decoder that gets Component vs. Full URL right
Encode or decode text for URLs with two distinct, correct modes — Component for a single value, Full URL for an entire link — instead of one mode that quietly gets one of them wrong.
2026-08-13 - New: a Unix timestamp converter that handles timezones correctly, both directions
Convert Unix epoch seconds to a human date, or a date back to a Unix timestamp, in any IANA timezone — with milliseconds shown alongside seconds so you never mix the two up.
2026-08-13 - New: a subnet calculator that handles /31 and /32 correctly
Enter a CIDR block and get the network address, broadcast address, subnet mask, and usable host range instantly — with RFC 3021 handled correctly for /31.
2026-08-13 - New: a regex tester that highlights matches without breaking on special characters
Try a JavaScript regular expression against your text and see every match and capture group highlighted live — shareable pattern links, no server round trip.
2026-08-13 - New: a JWT decoder that's honest about what it doesn't do
Why we built a JWT decoder that refuses to verify signatures — what the three parts of a token actually contain, and why pasting a signing key into a web form is the wrong habit.
2026-08-13 - New: a JSON formatter that shows you the parser's real error
Pretty-print with 2, 4, or tab indentation, minify, and get the browser's own SyntaxError when your JSON is broken — no server round trip.
2026-08-13 - New: a hash generator that computes all four algorithms at once
Generate MD5, SHA-1, SHA-256, and SHA-512 from the same text live as you type — computed entirely in your browser, nothing is ever uploaded.
2026-08-13 - New: a cron parser that shows plain-language schedules and real next-run times
Paste a 5-field cron expression and get a plain-language summary plus the next 5 run times, computed with an honest brute-force scan — no clever jumps, no guessing.
2026-08-13 - New: a Base64 converter that doesn't mangle emoji or accents
Encode and decode text to Base64 with a Unicode-safe TextEncoder/TextDecoder pipeline, so café, emoji, and non-Latin scripts round-trip correctly.
2026-08-13