~/devtoolkit

Developer Toolkit

Free developer utilities for JSON, encoding, generators, converters, security and productivity. Fast. Private. Browser-based.

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ankit@dev:~/devtoolkit

JSON FormatterHotJSONBeautify, minify, and validate JSON with syntax highlighting.Open
JSON ValidatorJSONValidate JSON syntax and detect errors with line numbers.Open
Regex TesterHotTextTest regular expressions with live matching and flag support.Open
Base64 Encoder/DecoderEncodingEncode text to Base64 or decode Base64 strings instantly.Open
JWT DecoderHotSecurityDecode and inspect JWT tokens — header, payload, and signature.Open
UUID GeneratorGeneratorsGenerate cryptographically secure UUIDs (v1, v4) in bulk.Open
Password GeneratorSecurityGenerate strong, secure passwords with customizable character sets.Open
Timestamp ConverterConvertersConvert Unix timestamps to human-readable dates and vice versa.Open
URL Encoder/DecoderEncodingEncode or decode URL components and query strings instantly.Open
QR Code GeneratorHotGeneratorsGenerate QR codes for URLs or text. Download as PNG.Open
Color PickerWebPick colors, convert between HEX, RGB, HSL, and generate palettes.Open
HTML PreviewerWebWrite and preview HTML, CSS, and JavaScript live in the browser.Open
CSS MinifierCodeMinify CSS code to reduce file size and improve page load speed.Open
JS BeautifierHotCodeBeautify and format minified or messy JavaScript code instantly.Open
Markdown PreviewerTextWrite Markdown and see a live rendered preview side by side.Open
Diff CheckerTextCompare two texts side by side and highlight differences.Open
SQL FormatterCodeFormat and beautify SQL queries for better readability.Open
Image CompressorHotImagesCompress JPG, PNG, and WebP images without visible quality loss.Open
Image ConverterHotImagesConvert images between PNG, JPG, WebP, AVIF and more formats.Open
GIF CompressorHotImagesShrink animated GIFs by reducing colours and scale — every frame preserved.Open

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