Developer & CSV tools

Small, single-purpose utilities for everyday dev & data work — encode, hash, decode, convert and compare. Every one runs 100% in your browser, so your data is never uploaded.

16 tools live · on your device · free

Encode & decode

64Base64Encode / decode text to Base64%URL encodePercent-encode / decode URLs&HTML entitiesEscape / unescape HTML

Hash & token

#Hash generatorMD5, SHA-1, SHA-256, SHA-512JWJWT decoderRead a JWT’s header & payload

IDs & time

IDUUID generatorRandom v4 UUIDs, one or many⏱TimestampUnix epoch ↔ date

Data & CSV

⇄CSV ↔ JSONConvert CSV to JSON and backYJSON ↔ YAMLConvert JSON and YAML▦CSV cleanerTrim, drop blanks & dedupe

Text

±Text diffCompare two texts line by lineAaCase convertercamelCase, snake_case, Title…-SlugifyText → clean url-slug↕Sort / dedupe linesOrder & unique lines.*Regex testerLive matches & capture groupsLorem ipsumPlaceholder text, by paragraph