Formatters & Beautifiers
6 tools
In Development
Free tools for
every developer
OpenFormatter is an open, fast, ad-free suite of 30+ developer tools — formatters, validators, converters, encoders and more. All in-browser. No data leaves your device.
Get notified the day we launch. No spam, ever.
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What's coming
30+ tools, zero friction
Every tool a developer reaches for — all in one open, fast place. Click any tool to preview its page.
Validators & Testers
6 tools
Converters
8 tools
- XML to JSON Converter
- JSON to XML Converter
- CSV to JSON Converter
- CSV to XML Converter
- YAML to JSON Converter
- JSON to YAML Converter
+ XSD Generator, Epoch Timestamp Converter
Encoders & Cryptography
6 tools
+ HMAC Generator, File Encoding Converter
Minifiers
2 tools
String Escaper & Utilities
8 tools
+ XML Escape, JS Escape, SQL Escape, CSV Escape, String Utilities, Java/.Net Escape
Web Resources
5 tools
+ HTML Entities, MIME Types, URL Parser, i18n Snippets
Why OpenFormatter
Built differently
Everything you need, nothing you don't.
Instant & in-browser
All tools run client-side. Your data never leaves your browser — fast, private, secure.
Zero ads
No ads, no trackers, no popups. Clean interface that lets you focus on the work.
File & paste support
Paste your code or upload files directly. Both input modes work seamlessly.
Shareable results
Share formatted output with teammates via a permanent link — no account needed.
Dark & light mode
Adapts to your system preference. Easy on the eyes at 2 AM.
Mobile friendly
Fully responsive. Works great on any device, any screen size.
Tools index
OpenFormatter will offer free online tools covering JSON formatting, XML formatting, SQL formatting, HTML beautification, JavaScript minification, CSS minification, Base64 encoding and decoding, URL encoding and decoding, regex testing, Java regex testing, JSON validation against RFC 4627, XML validation with XSD schema, HTML validation per W3C standards, CSV to JSON conversion, CSV to XML conversion, YAML to JSON conversion, JSON to YAML conversion, XPath testing, XSD generation from XML, XSLT transformation, HMAC generation, QR code generation for URLs, vCard, WiFi and SMS, Lorem Ipsum placeholder text generation, HTML entity lookup, MIME type reference, URL parsing and query string splitting, epoch and Unix timestamp conversion, cron expression generation for Quartz, message digesting with MD5, SHA-256 and SHA-512, file encoding conversion, HTML escape and unescape, JSON escape and unescape, XML escape, JavaScript escape, SQL escape, CSV escape, string utilities including word count and character info, and many more free developer utilities — all running client-side with no ads and no data upload.