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GraphQL DevTools 2.0 is a Firefox extension, rewritten from scratch, that shows every GraphQL request of the page at a glance: operation name, type, timing and result. It formats query, variables and headers, shows the response as a browsable tree and highlights GraphQL errors even when the server answers HTTP 200. It handles batched requests, persisted queries (APQ) and subscriptions. Includes a Playground with schema autocomplete, a schema explorer, insights on slow and failing operations, mock responses, saved queries, copy as cURL and HAR export. Light and dark theme, English and Italian. Works in the DevTools panel on desktop and from the extension button on Firefox for Android. No data leaves the browser.
Features
- Every GraphQL request at a glance: operation, type, timing, result
- GraphQL errors highlighted even on HTTP 200
- Batched requests, persisted queries (APQ) and subscriptions
- Playground with schema autocomplete
- Schema explorer
- Insights on slow and failing operations
- Mock responses and saved queries
- Copy as cURL and HAR export
- Light and dark theme, English and Italian
- Works on desktop DevTools and Firefox for Android
- No data leaves the browser
Project Samples
