Developer tools that run in your browser

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calculators

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Calculate and convert aspect ratios for images, video, and screens.

Count characters, words, sentences, and paragraphs in real time.

Calculate Linux file permissions in numeric and symbolic notation.

Count words, sentences, paragraphs with keyword density analysis.

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Encode text to Base64 or decode Base64 strings instantly in your browser.

Encode or decode URLs and query strings instantly in your browser.

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Generate beautiful color palettes with harmony modes.

Generate secure random passwords with customizable options.

Generate random UUIDs (v4) instantly. Bulk generate, validate, and copy.

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Minify CSS to reduce file size and improve load times.

Format, validate, and minify JSON data instantly in your browser.

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Compare two texts and highlight the differences line by line.

Validate JSON syntax and inspect structure with detailed error reporting.

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

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Convert JSON arrays to CSV format with nested object support.

Convert Unix timestamps to human dates and vice versa.