78 tools · 10 themes · light & dark

Developer tools that never upload your data.

Format, encode, hash, convert and generate — every tool runs inside your browser. Faster than a server round-trip, private by design, and it works offline.

78 TOOLS0 UPLOADS100% IN-BROWSER10 THEMES

Browse by category

Six groups, 78 tools, no sign-up anywhere.

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Format

Make messy data readable and valid.

16 TOOLS

Encode

Convert data between representations.

17 TOOLS

Text

Clean, count and reshape text.

16 TOOLS

Convert

Numbers, dates, colours and units.

11 TOOLS

Generate

IDs, passwords and random values.

7 TOOLS

CSS

Visual builders that output real CSS.

4 TOOLS

Web & SEO

Reference tables and generators for the web.

7 TOOLS

Most used

The ones people open every day.

JSON FormatterPretty-print JSON with sorted keys and errors explained. Base64 Encode / DecodeRound-trip Base64 with Unicode support. Password GeneratorStrong random passwords with a strength meter. JWT DecoderDecode header, payload and expiry — no verification. Word & Character CountWords, characters, sentences, lines and reading time. Colour ConverterHEX, RGB, HSL and a live swatch. UUID GeneratorCryptographic UUID v4 and v7. Timestamp ConverterUnix seconds ↔ ISO date ↔ local time.