Readable JSON instantly
Raw JSON pages become a folded, searchable tree without leaving the tab.
folding + search
JP
Developer tools · JSON
JSONPeek formats raw JSON responses inline, without uploading them.
Open a JSON response and get folding, search and local conversion helpers right in the browser. Free, local-first and built for debugging APIs quickly.
Add to Chrome
Completely free · no paywall
Local conversion helpers
Convert JSON, YAML and CSV locally while you inspect API responses.
no uploadFree by design
No account, no paywall and no tracking. It exists to make our paid tools easier to trust.
freePrivate by construction
local processing · zero tracking · no data sold
- No analytics
- No telemetry
- No third-party SDKs
- Data never leaves the browser
Questions people ask
Is JSONPeek free?
Yes. It is a free extension with no account requirement and no paid upgrade.
Does JSON leave my browser?
No. Formatting, folding, search and conversion run locally in the browser.
Which pages does it run on?
It activates on JSON responses and local JSON files opened in the browser.
Questions & suggestions
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