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More Developer Tools

Base64 EncoderEncode UTF-8 text to Base64 instantly in your browser with byte-size stats.
Base64 DecoderDecode Base64 strings back to UTF-8 text instantly in your browser with byte-size stats.
JavaScript BeautifierFormat and beautify JavaScript code with indentation, readable blocks, and optional minification.
Regex TesterTest regular expressions live against sample text with flags, match details, and replace preview.
UUID GeneratorGenerate RFC 4122 UUID v4 identifiers in bulk with optional uppercase and hyphen formatting.
URL Encoder / DecoderEncode or decode URL strings with encodeURI or encodeURIComponent, entirely in your browser.

Part of:Free Developer Converters & Encoders

Diff Checker

Compare two texts and highlight added, removed, and changed lines or words instantly in your browser.

Original text

Changed text

+2Additions

-2Deletions

2Unchanged

11The quick brown fox

2-jumps over the lazy dog.

2+leaps over the lazy dog.

33Pack my box with five dozen liquor jugs.

4-Sphinx of black quartz, judge my vow.

4+The five boxing wizards jump quickly.

Comparison runs entirely in your browser. Nothing is uploaded to a server.