Free, private web utilities

Minimal Tools

Free, private web utilities. Everything runs in your browser. Nothing uploaded. No signup.

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JSON Formatter

Pretty-print, validate, and minify JSON

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Regex Tester

Test regular expressions with match highlighting

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Colour Palette

Generate harmonious colour palettes

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Markdown Preview

Write markdown, preview rendered HTML

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Timestamp Converter

Convert between Unix timestamps and dates

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Base64 Encoder

Encode and decode Base64 strings

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UUID Generator

Generate UUID v4 identifiers

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Text Diff

Compare two text blocks side by side

More tools added regularly. All free. All private.