Tools

Browse the growing collection of utilities. Everything runs client-side so your data stays on your device.

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JSON Parser & LinterValidate, format, and inspect JSON by pasting or uploading a file.
jsonparserlintformat
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YAML Linter & FormatterValidate, prettify, and inspect YAML documents—including multi-document files—in the browser.
yamlparserlintformat
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CSS Parser, Linter & FormatterValidate, format, and minify modern CSS with native nesting support.
cssparserlintformatnesting
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Image ConverterConvert images between PNG, JPEG, and WebP directly in your browser.
imageconverterresize
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Pixel ConverterTranslate measurements between px, rem, and em with a custom root size.
pixelscssresponsiveremconverter
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CSS Color ConverterView synchronized color values across hex, RGB, HSL, Lab, OKLab, and more.
colorcsshexrgbhsllaboklabconverter
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SVG OptimizerUpload and clean SVGs with SVGO presets, preview, and export.
svgoptimizersvgovectorminify
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Contrast CheckerCalculate contrast ratios and check WCAG compliance for accessibility.
colorcontrastwcagaccessibilitychecker
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Regex TesterReal-time regex tester with explainers and shareable test cases for frontend debugging.
regexpatterntestmatchdebug
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Markdown PreviewSide-by-side Markdown editor with HTML export for docs/snippets.
markdownprevieweditorhtmlexport
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Data URI EncoderConvert files or strings into data URIs/Base64 blobs for quick inlining.
base64data-uriencoderconverterinline
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