Developer Tools
Quick, free utilities for everyday development work — encode and decode Base64 or URLs, format and minify JSON, generate secure hashes, UUIDs and QR codes, and convert Unix timestamps. Every tool runs entirely in your browser, so tokens, payloads and other sensitive strings never leave your machine.
- Base64 EncoderBase64 text
- Base64 DecoderDecoded text
- URL EncoderURL-encoded text
- URL DecoderDecoded text
- JSON FormatterFormatted JSON
- JSON MinifierMinified JSON
- SHA-256 Hash GeneratorHex digest
- UUID GeneratorUUID list
- Unix Timestamp ConverterDate / timestamp breakdown
- QR Code GeneratorPNG image
- CSS MinifierCSS
- CSS BeautifierCSS
- JavaScript MinifierJavaScript
- JavaScript BeautifierJavaScript
- HTML MinifierHTML
- HTML BeautifierHTML
- SQL FormatterSQL
- JWT DecoderJSON
- HTML Entity EncoderText
- HTML Entity DecoderText
- Cron Expression ParserText
- Markdown PreviewHTML
- Regex TesterText
- MD5 Hash GeneratorHex digest
- SHA-1 Hash GeneratorHex digest
- SHA-512 Hash GeneratorHex digest
- JWT EncoderSigned token
- Crontab GeneratorCron expression
- JSON to TypeScriptTypeScript
- JSON to GoGo source
- JSON to PythonPython source
- cURL to FetchJavaScript
- Query String to JSONJSON
- ENV to JSONJSON
- HTML to MarkdownMarkdown
- Markdown to HTMLHTML
- Password GeneratorPassword list
- CSS Gradient GeneratorCSS
- Box Shadow GeneratorCSS
- Border Radius GeneratorCSS
- What Is This File?Format report
Learn more
- What Is a JWT?What a JSON Web Token actually contains, how signature verification works, and why you should never store sensitive data in one.
- Regular Expressions: A Beginner's GuideThe regex building blocks that cover most real-world pattern matching — character classes, quantifiers, groups — explained plainly.