Developer Tools, Directly in Your Browser

Pretty-print, validate, and minify JSON in one click. Great for reading API responses.

Encode and decode text to and from Base64 for auth headers, tokens, and payloads.

Percent-encode or decode URLs and query strings with safe character handling.

Generate random UUIDs (v4) in bulk for keys, names, and database identifiers.

Compute MD5 hashes of text or hex strings instantly for quick checks.

Generate SHA-256 hashes for integrity checks and simple fingerprints.

Create strong, customizable passwords with letters, digits, and symbols.

Convert between Unix timestamps and human-readable dates in both directions.

Turn JSON into clean, readable YAML for config files and workflows.

Strip whitespace and comments from CSS for smaller, faster stylesheets.

Escape or unescape HTML entities to safely embed text in markup.

Encrypt text into Chinese, English letters or other scripts, with an optional secret key.

Convert numbers between binary, octal, decimal, and hexadecimal.

Compare two texts side by side and spot added, removed and changed lines instantly.

Turn any text or URL into a QR code with custom size, colors and error correction.

Decode QR codes from images - paste, drag & drop or select multiple pictures.