Developer utilities
Format code the moment
Format code the moment
you paste it.
Beautify, minify and validate JSON, XML and JavaScript in your browser. Fast, distraction-free, and built to enterprise standards.
Config files
Code
Web & styles
Data & markup
Developer utilities
Why FormatterHub
Private by default
No accounts, no analytics. We keep only a short, truncated preview for the recent-activity list.
Instant feedback
Validation reports the exact line and column so you fix the real problem, not a symptom.
Extensible engine
Every tool shares one clean API. Adding a new language is a single service class — nothing else changes.
FAQ
No. Formatting happens through our API and only a short truncated preview plus metadata is kept for the recent-activity list. The full payload is never persisted.
Yes — uploads are capped (5 MB by default) and the formatting engine rejects payloads beyond a configurable character limit to protect the service.
Yes. Every tool is backed by a documented REST endpoint such as POST /api/json/format. See the API link in the footer.
The validator parses both scripts and ES modules, so modern ES6+ syntax including import/export is understood.