Hex Downloads & RevenueHex: Dev Tools · App Store

Hex is a developer toolkit for iPhone and iPad: 21 small utilities for the jobs that interrupt real work, like decoding a token, pretty-printing a payload, testing a pattern or checking a file hash. Everything runs on your device.

ENCODE
• Base64: encode text, or decode standard, URL-safe (base64url), line-wrapped (MIME) and unpadded input. Bytes that aren't UTF-8 text are shown as a hex dump.
• URL Encode: percent-encode a value so & = ? / # + : @ are escaped, or decode it (+ reads as a space). Malformed escapes are flagged.
• HTML Entities: encode ampersands, angle brackets and quotes, or decode every HTML 4 named entity (nbsp, copy, mdash and the rest) plus decimal and hex references.
• JWT Decode: header and payload as readable JSON, with claim order kept.
• Hash Generator: MD5, SHA-1, SHA-256 and SHA-512 of any text.

FORMAT
• JSON Formatter: prettify, minify and validate. Your key order, numbers and escapes stay exactly as written, and top-level values like "text" or 42 are accepted.
• XML Formatter: indents and validates. Comments, CDATA, processing instructions and the XML declaration are kept, and the output is re-escaped so it stays valid XML.
• SQL Formatter: puts SELECT, FROM, WHERE, JOIN, GROUP BY and ORDER BY clauses on their own lines and uppercases keywords. Strings, quoted names and -- or /* */ comments pass through unchanged.
• Markdown Preview: headings, bullet and numbered lists, block quotes, fenced code blocks and rules, with bold, italic, inline code and links.
• HTML Preview: renders your HTML offline. Remote images, scripts, styles and frames are blocked, and links don't navigate away.

GENERATE
• UUID Generator: version 4 UUIDs, 1 to 100 at a time, upper or lower case.
• Lorem Ipsum: words, sentences or paragraphs.
• Password Generator: 4 to 128 characters from uppercase, lowercase, digits and symbols, with at least one from each set you pick. The strength meter shows entropy in bits.
• Color Converter: HEX (3 or 6 digits), RGB and HSL, each editable with sliders.
• Checksum: MD5, SHA-1 and SHA-256 of a file from Files, read in chunks so large files work, and a check against an expected hash.

TIME
• Unix Timestamp: timestamp to date and back. Seconds, milliseconds and microseconds are recognised.
• Cron Parser: standard five-field cron with ranges, lists, steps and month or weekday names, a plain-English description and the next five run times.
• Timezone Converter: pick a time and the zone it's in, then see it in any of the listed zones.

TEXT
• Diff Checker: line-by-line comparison that lines up inserted and deleted lines.
• Regex Tester: matches highlighted in your text, a numbered match list, and case-insensitive, multiline and dot-matches-newline options.
• Text Inspector: characters, words, lines, sentences, paragraphs and UTF-8 bytes, with a character breakdown.

WORKFLOW
• Clipboard detection: copy JSON, a JWT, Base64, a URL, XML, HTML, a Unix timestamp, a hex color or SQL, and Hex offers the matching tool with