Dev / Browse

Dev Tools

Paste in messy JSON, raw timestamps, or Base64 strings — get a clean result out. Faster than opening your IDE for a one-off task.

Browse Dev Tools

Each tool does one thing well — format, encode, decode, convert, or count.

Dev / Tool

Base64 Encoder / Decoder

Encode and decode Base64 instantly — full UTF-8 support for CJK and emoji. Runs locally in your browser.

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Dev / Tool

Unix Permissions Calculator

Toggle 9 permission bits to instantly generate chmod numeric and symbolic notation.

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Dev / Css

CSS Minifier / Beautifier

Minify CSS for shipping or beautify it for review, with the original vs result byte delta visible at a glance.

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Dev / Tool

HTML Entity Encoder / Decoder

Encode or decode HTML entities — paste in, copy out.

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Dev / Json

JSON Formatter

Pretty-print, minify, or validate JSON with error location hints.

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Dev / Tool

Number Base Converter

Convert between BIN, OCT, DEC, and HEX live — with bit strip visualization and power-of-2 detection.

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Dev / Tool

URL Encoder / Decoder

Encode or decode URLs — handles CJK paths and special characters.

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Dev / Tool

UUID Generator

Generate one or many UUID v4 identifiers instantly — toggle hyphens, copy one or all, zero dependencies.

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Frequently Asked Questions

What developer tools are available?

JSON formatting, Base64 encoding/decoding, HTML entity encoding, markdown cleaning, character counting, UUID generation, number base conversion, Unix permission calculator, and timestamp conversion tools.

Do I need to install anything?

No installation needed. All dev tools run directly in your browser — just open and use.

What encoding tools are available?

Base64 encoder/decoder, HTML entity encoder/decoder, and number base converter (binary, octal, decimal, hex). All handle encoding and decoding in both directions.

Can I process multiple items at once?

Yes. The UUID generator supports batch generation, and the timestamp converter handles multiple timestamps at once.