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 toolTest and debug regular expressions with real-time matching and highlighting.
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 toolDecode and inspect JWT tokens instantly. View header, payload, claims, and expiration status.
Use toolFormat, beautify, and minify SQL queries with keyword highlighting and customizable indentation.
Use toolInteractive Unix file permissions calculator - toggle checkboxes or enter numeric values to see chmod commands instantly.
Use toolPaste JSON and instantly generate a JSON Schema with types, required fields, and nested object support.
Use toolEncode special characters to HTML entities or decode HTML entities back to readable text - supports named and numeric entities.
Use toolMinify CSS to reduce file size or beautify compressed CSS for readability - with size comparison stats.
Use toolValidate email addresses instantly. Check syntax, deliverability, and common typos.
Use toolConvert traditional CSS to Tailwind utility classes instantly. Free, no signup.
Use toolConvert text to ASCII and Unicode codes, or decode codes back to text. Works with special characters.
Use toolMinify JavaScript to reduce file size or beautify compressed JS for readability — with size stats. 100% browser-based, free.
Use toolTest API endpoints and measure response times, status codes, and headers instantly.
Use toolCompare two JSON objects side-by-side and instantly find added, removed, and changed keys.
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