Tools
A collection of small, self-contained HTML tools.
Colophon
Markdown Preview
Render Markdown into a clean, readable document with a live GitHub-style preview.
Updated Jun 10, 2026
Base64 Encoder / Decoder
Encode and decode Base64 text with correct UTF-8 handling.
Updated Jun 10, 2026
JSON Formatter
Pretty-print, minify, and validate JSON entirely in your browser.
Updated Jun 10, 2026
UUID Generator
Generate one or many random v4 UUIDs using the browser's crypto API.
Updated Jun 10, 2026