Live now· #32 this week
JSON Formatter
Format, validate, and minify JSON online
Free1,790 impressions#32 this week
Format, validate, and minify JSON with syntax highlighting and tree view. Error detection and path navigation.
A browser-based tool to format, validate, minify, compare and explore JSON with syntax highlighting and tree view.
- for
- Developers who need to work with JSON locally without sending data to a server
- pricing
- free
Key features
6 features of JSON Formatter
- Format & Beautify — Add 2-space, 4-space or tab indentation to make JSON readable.
- Minify — Remove all optional whitespace to shrink JSON payloads.
- Validate — Real-time syntax checking with line and column error hints.
- Tree View — Explore nested objects and arrays and copy node paths.
- Convert — Export JSON to CSV, YAML or XML in one click.
- Compare — Diff two JSON objects side-by-side with color-coded changes.
Use cases
- Debug API responses by formatting raw JSON for quick inspection
- Fix broken config files such as package.json by pinpointing syntax errors
- Explore large nested data structures using collapsible tree view
- Prepare JSON for production by minifying before embedding in code
JSON Formatter FAQ
Is this JSON formatter free to use?+
Yes, it is completely free with no registration required.
Does this tool validate JSON syntax?+
Yes, it validates in real time and shows detailed error messages with line numbers.
Can I use this JSON formatter offline?+
Yes, after the page loads once it runs entirely in the browser with no server communication.
What is the maximum JSON size supported?+
It can handle files up to several megabytes, limited only by the browser’s memory.
Summarized by DevHunt from jsonformat.co · Oct 1, 2026. Details may change; check the official site.
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