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Developer Tools

Free developer tools. JSON formatter, Base64, color converter, UUID generator, PX to REM and more.

JSON Formatter
HOT
Format, minify and validate JSON
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Color Palette Generator
Complementary, triadic color palettes
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JSON to CSV Converter
Convert JSON arrays to CSV and back
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PX to REM Converter
Convert pixels to rem, em, pt and more
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Text / Markdown to HTML
Convert plain text or Markdown to HTML
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Screen Resolution Checker
Check your screen and viewport specs
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Base64 Encoder / Decoder
Encode and decode Base64 strings
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HTML Entity Encoder
Encode and decode HTML entities
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URL Encoder / Decoder
URL percent-encoding tool
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Color Converter
Convert HEX to RGB to HSL
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Regex Tester
Live regex match highlighter
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CSS Minifier
Minify and beautify CSS code
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JavaScript Minifier
Minify JS and strip comments
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Number Base Converter
Decimal, Binary, Hex, Octal converter
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UUID Generator
Generate bulk v4 UUIDs instantly
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Timestamp Converter
Convert Unix timestamps to dates
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QR Code Generator
Generate QR codes instantly
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← Browse All 102 Free Tools