Is my JSON sent to a server?

No. Everything runs in your browser, which matters when the JSON contains API keys, personal data or anything else you would not paste into an unknown website.

Because it makes two JSON documents comparable. Key order is not meaningful in JSON, but a diff tool will report it as a change — sorting both sides first removes that noise.

🔧 JSON Tools

Validate, pretty-print, minify, sort keys and inspect JSON — entirely in your browser.

JSON

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Used by Pretty-print and Sort keys.

About JSON Formatter & Validator

JSON is easy to produce and hard to read once it arrives minified, deeply nested or with keys in an arbitrary order. These tools make it legible and check that it is actually valid.

How to use it

Paste your JSON, or open a file.
Choose an operation: validate, pretty-print, minify, or sort keys alphabetically.
Invalid JSON reports the position of the problem rather than just failing.

Frequently asked questions

Is my JSON sent to a server?: No. Everything runs in your browser, which matters when the JSON contains API keys, personal data or anything else you would not paste into an unknown website.
Why sort keys?: Because it makes two JSON documents comparable. Key order is not meaningful in JSON, but a diff tool will report it as a change — sorting both sides first removes that noise.