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Developer tools that are fast, simple & private.

Format, convert, encode and decode common developer data directly in your browser.

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Popular tools

Everyday utilities for developers

FORMATTER

JSON Formatter

Beautify and validate JSON with an editable formatted view.

Open tool →FORMATTER

XML Formatter

Format XML with an editable highlighted view.

Open tool →CONVERTER

JSON ↔ XML Converter

Convert common JSON structures to XML and back.

Open tool →SECURITY

JWT Decoder

Decode JWT header and payload locally without verification.

Open tool →ENCODER

Base64 Encoder / Decoder

Encode or decode UTF-8 text using Base64.

Open tool →ENCODER

URL Encoder / Decoder

Encode or decode URL component text safely.

Open tool →COMPARE

JSON Diff

Compare JSON payloads and see added, removed and changed paths.

Open tool →WEB

Regex Tester

Test patterns against text directly in your browser.

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More developer tools

40+ utilities and growing

Web & APIURLs, regex, diffs, referencesUtilitiesUUID, dates, cron, text and numbersAI Developer ToolsPrompts, tokens, JSONL, schemas and MCPSQL FormatterQuick SQL readabilityJSON ↔ CSVConvert tabular JSON data

Tool categories

Built to grow into a complete developer toolbox

FormattersJSON, XML, HTMLConvertersTransform between formatsEncoders / DecodersBase64, URL and moreSecurityJWT and future security tools