Free Online Developer Tools

JSON, Base64, hash, UUID and coding helpers for developers.

24 live · private browser processing where possible · no signup required

JSON FormatterDeveloper Tools

Format, validate and minify JSON with clear error messages.

Base64 Encoder / DecoderDeveloper Tools

Encode text to Base64 or decode Base64 back to text.

Password GeneratorDeveloper Tools

Generate strong random passwords with customizable rules.

UUID GeneratorDeveloper Tools

Generate UUIDs.

Hash GeneratorDeveloper Tools

Generate MD5, SHA-1, SHA-256, SHA-512 hashes.

Timestamp ConverterDeveloper Tools

Convert Unix timestamps.

URL Encoder / DecoderDeveloper Tools

Encode and decode URLs safely.

JSON ValidatorDeveloper Tools

Validate JSON syntax.

JSON MinifierDeveloper Tools

Minify JSON payloads.

XML FormatterDeveloper Tools

Pretty-print XML.

Regex TesterDeveloper Tools

Test regular expressions.

Random Number GeneratorDeveloper Tools

Generate random numbers.

Color ConverterDeveloper Tools

Convert HEX, RGB and HSL.

JWT DecoderDeveloper Tools

Decode JWT tokens locally.

HTML FormatterDeveloper Tools

Format and minify HTML markup.

CSS FormatterDeveloper Tools

Format and minify CSS stylesheets.

JavaScript FormatterDeveloper Tools

Format and minify JavaScript code.

XML ValidatorDeveloper Tools

Validate XML documents for parse errors.

SQL FormatterDeveloper Tools

Format and minify SQL queries.

GUID GeneratorDeveloper Tools

Generate GUID / UUID v4 values instantly.

Unix Timestamp GeneratorDeveloper Tools

Get the current Unix timestamp live.

User Agent ViewerDeveloper Tools

Inspect your browser user agent string.

Screen Resolution CheckerDeveloper Tools

Check screen and viewport size.

IP Address ViewerDeveloper Tools

View your public IP address and location.

About these developer tools

Handy developer utilities: format and validate JSON, encode or decode Base64 and generate strong passwords. Lightweight tools that stay in the browser.

Every live tool on Free Quick Tools has its own page with instructions, privacy notes and related utilities so you can finish the full workflow without hunting across the web.

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