Hex: Dev Tools

Twenty-one developer utilities. Offline. One purchase. Hex is the pocket toolkit for the small jobs that interrupt real work — decode a token, pretty-print a payload, test a pattern, check a hash. Every tool runs on your phone. Hex asks for no permissions at all, not even internet access. ENCODE Base64 — Encode and decode. URL Encode — Percent-encode and decode. HTML Entities — Encode and decode entities. JWT Decode — Header and payload, pretty-printed. Hash Generator — MD5, SHA-1, SHA-256 and SHA-512. FORMAT JSON Formatter — Prettify, minify and validate. XML Formatter — Format and validate. SQL Formatter — Readable queries. Markdown Preview — Edit and preview. HTML Preview — Live rendered HTML. GENERATE UUID Generator — v4 UUIDs, in bulk. Lorem Ipsum — Words, sentences or paragraphs. Password Generator — Secure random passwords with a strength meter. Color Converter — HEX, RGB and HSL. Checksum — MD5, SHA-1 and SHA-256 of any file, any size, and verify it against an expected hash. TIME Unix Timestamp — Timestamp to date and back. Cron Parser — Read cron expressions, with presets. Timezone Converter — Convert a time across zones. TEXT Diff Checker — Compare two texts. Regex Tester — Live matches, with common patterns. Text Inspector — Characters, words, lines and more. Copy something and open Hex: it spots JSON, JWT, Base64, URLs, XML, HTML, timestamps, UUIDs, colours and SQL on the clipboard and offers the right tool. Every result copies or exports as a file. No account, no ads, no tracking, no subscription. Built by Shyguy LLC — a one-person studio making focused tools for developers.