Essential developer utilities: format and validate JSON, test regular expressions with live highlighting, encode/decode Base64 and URLs, generate UUIDs, check text diffs, convert timestamps, and manage cron expressions. No signup, no installs.
Format, validate, and beautify your JSON data with syntax highlighting.
Use toolEncode text to Base64 or decode Base64 strings instantly.
Use toolPick colors and convert between HEX, RGB, HSL, and more formats.
Use toolTest and debug regular expressions with real-time matching and highlighting.
Use toolConvert Markdown text to clean HTML code with live preview.
Use toolEncode or decode URLs and query parameters.
Use toolGenerate random UUIDs (v4) instantly. Bulk generate and copy.
Use toolGenerate SHA-256, SHA-1, and MD5 hashes from any text instantly.
Use toolConvert Unix timestamps to human-readable dates and vice versa.
Use toolBuild and validate cron expressions with a visual editor.
Use toolWrite Markdown with a live HTML preview. Includes formatting toolbar, syntax highlighting, and one-click copy for HTML or Markdown.
Use tool