Getting started with JSONPeek
Quick start
- Install JSONPeek from the Chrome Web Store.
- Open any raw JSON page or API response — JSONPeek renders it folded and searchable.
- Need a different format? Open the popup and convert JSON ↔ YAML ↔ CSV, right in the tab.
What JSONPeek does
JSONPeek turns a raw application/json response into a readable, collapsible tree with search — and converts between JSON, YAML and CSV. Everything runs in your browser, and it ships with the minimum permissions: no standing access to your sites.
Reading a JSON page
Open any URL that returns JSON — an API endpoint or a .json file. JSONPeek formats it automatically: collapse and expand nodes, and use the search box to jump to a key or value. Large integers keep full precision; they are never rounded.
Converting formats
Open the popup, bring in your JSON, pick a target — YAML or CSV — and copy the result. Conversion happens locally in your tab; nothing is uploaded.