Developer Tools
JSON, regex, encoding, and hashing tools for programmers.
Regex Tester
Test a JavaScript regular expression against real text, live.
UUID Generator
Generate random UUID v4 identifiers, one or many at a time.
Base64 Encoder/Decoder
Encode text to Base64, or decode it back — Unicode-safe.
Hash Generator
MD5, SHA-1, SHA-256, SHA-384, and SHA-512 — all at once.
Lorem Ipsum Generator
Placeholder text by paragraphs, sentences, or words.
Cron Expression Explainer
Turn a cron schedule into plain English.
URL Encoder/Decoder
Percent-encode or decode a URL or query string.
Markdown Viewer & Editor
Write or upload Markdown and see the rendered page live.