MiniTools: Free Online Toolbox

Free · No sign-up · Your data never leaves your browser

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Privacy-first

Every calculation runs locally in your browser. Your data never leaves your device.

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Instant

No sign-up, no ads, no frameworks. Opens in seconds on phone or desktop.

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Free forever

Every feature is free, and new tools ship weekly.

Text Tools

Word CounterFree online word counter: count …Case ConverterFree online case converter: conv…Remove Duplicate LinesFree online deduplicate tool: re…Text Difference CheckerFree online diff checker: paste …Markdown PreviewFree online Markdown editor with…

Developer Tools

JSON FormatterFree online JSON formatter: vali…Base64 Encode / DecodeFree online Base64 encoder/decod…URL Encoder / DecoderFree online URL encoder/decoder:…Regex TesterFree online regex tester: test r…UUID GeneratorFree online UUID generator: bulk…Unix Timestamp ConverterFree Unix timestamp converter: c…Random Password GeneratorFree secure password generator: …Color ConverterFree online color converter: con…JWT DecoderFree online JWT decoder: paste a…Cron Expression ParserFree cron expression parser: pas…SQL FormatterFree online SQL formatter: beaut…Base ConverterFree base converter: convert num…HTML Escape / UnescapeFree HTML escape tool: convert <…Image to Base64Free image-to-Base64 converter: …User-Agent ParserFree online User-Agent parser: p…CSS Gradient GeneratorFree CSS gradient generator: bui…

Everyday Tools

Unit ConverterFree online unit converter: leng…Random PickerFree online random picker: draw …QR Code GeneratorFree QR code generator: create Q…

About MiniTools

MiniTools covers three categories of online tools: text processing, developer utilities and everyday efficiency — word counters, JSON formatters, Base64 codecs, QR code generators, unit converters and more. Every tool works instantly with no registration; all data is processed locally in your browser and never uploaded to any server.

Unlike traditional tool sites cluttered with ads, MiniTools keeps it minimal: lightweight pages, mobile-first design and dark mode support. We ship new tools every week, covering more long-tail needs.