Category: Developer
Prettify and validate JSON
About JSON Formatter
JSON Formatter is a free online tool by HubTools — Prettify and validate JSON. Use it instantly in your browser: no installation, no signup.
- ✓Runs 100% in your browser — files never leave your device
- ✓Completely free, no signup, no usage limits
- ✓Category: Developer
- ✓Works on any device — desktop, tablet, and mobile
- ✓No installation required — just open it in your browser
Privacy matters — this tool runs 100% in your browser. Your files and data are never uploaded to any server; close the tab and everything is gone.
How to use JSON Formatter
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1
Paste your data or code into the input area
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2
Customize the options as needed
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3
Click the process button — everything runs directly in your browser
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4
Copy the output or download the generated file
Frequently Asked Questions
Is JSON Formatter free to use?
Yes. JSON Formatter by HubTools is 100% free, with no signup and no usage limits.
Will my files be uploaded to a server?
No — JSON Formatter runs entirely in your browser. Your files and data are never uploaded to any server.
Do I need an account to use it?
No account required. Just open the page and start using it immediately — no personal information needed.