Free Developer Tools

Fast, free, and private. All tools run 100% in your browser. No data is ever sent to our servers.

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JSON Formatter & Validator

Format, validate, and minify JSON data instantly.

FormatValidateMinify

Compare two texts or code blocks side by side.

CompareTextCode

Decode and inspect JSON Web Tokens securely.

DecodeSecurityAuth

Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 to text.

EncodeDecodeBase64

URL Encoder & Decoder

Encode or decode URLs and query parameters.

URLEncodeDecode

Generate random UUID v4 identifiers in bulk.

UUIDGenerateRandom

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

Tailwind CSS Converter

Convert between Tailwind CSS classes and vanilla CSS.

TailwindCSSConvert

Color Converter

Convert colors between HEX, RGB, HSL, and OKLCH.

Cron Expression Generator

Build and decode cron expressions with a visual editor.

CronScheduleGenerate

Format and beautify SQL queries with proper indentation.

SQLFormatBeautify

Test regular expressions with live match highlighting.

Timestamp Converter

Convert between Unix timestamps and human-readable dates.

Convert between JSON and YAML formats instantly.

JSONYAMLConvert

Markdown Preview

Write Markdown and see live HTML preview side by side.

MarkdownPreviewHTML

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