IT & Dev Tools

Format, validate, and minify JSON with syntax highlighting.

Test and debug regular expressions with real-time match highlighting.

Encode and decode Base64 strings instantly.

Pick any color and instantly convert between HEX, RGB, HSL and CSS formats. Copy values with one click.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 cryptographic hashes from any text. Runs entirely in your browser.

Generate placeholder text by paragraphs, sentences or words. Start with the classic Lorem ipsum opening or randomize.

Write Markdown and see the live HTML preview side by side. Copy rendered HTML with one click. No sign-up needed.

Decode and inspect any JSON Web Token instantly. See header, payload, all claims, expiry status and issued-at time in human-readable format. 100% client-side.

Generate cryptographically secure UUID v4 identifiers instantly. Single or bulk generation up to 100. Copy with one click. Runs entirely in your browser.

Encode special characters for safe URL transmission or decode percent-encoded strings. Supports encodeURIComponent and encodeURI modes.

Paste two texts and instantly see line-by-line differences highlighted in green and red. Uses LCS algorithm — same as git diff. No data sent to server.

Visually build cron schedules, generate the expression, get a plain-English description and see the next 5 run times. Includes common presets.