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Developer Tools

Encode plain text to Base64 format, or decode a Base64 string back to its original text. Useful for APIs, email, and data transfer.

Compare two versions of text and see the differences visually. Added lines are highlighted green, removed lines are highlighted red.

Format, validate, and minify JSON. Syntax highlighting, error detection, and one-click copy. Supports 2-space, 4-space, and tab indentation.

Convert colors between HEX, RGB, and HSL formats. Includes a color picker, visual sliders, and quick preset colors.

Test and debug regular expressions in real time. See matches highlighted, capture groups listed, with a quick reference cheat sheet.

Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text. Toggle uppercase output.

Decode and inspect JSON Web Tokens. View header, payload claims, expiry time, and issuer — all without leaving your browser.

Build cron expressions visually with field editors and quick presets. See the next scheduled run times in plain English.

Generate QR codes from any text, URL, or data. Customize size, colors, and error correction. Download as PNG or SVG.

Decode QR codes by uploading an image or scanning with your camera in real time. Works entirely in your browser.

Write and preview Markdown side-by-side in real time. Includes toolbar shortcuts, sync scroll, and copy as HTML.

Generate UUID v4 identifiers instantly. Bulk generate up to 100 UUIDs. Choose format: standard, no-hyphens, braces, or URN.

Generate strong random passwords with custom length, character sets, and strength indicator. Bulk generate up to 50 passwords.