Test GraphQL queries with variables. Format queries and variables, and preview formatted responses for development and debugging. Everything runs locally in your browser — nothing is uploaded.
Format and beautify GraphQL variables JSON with proper indentation. Ensure your variables are correctly structured before sending queries.
Format and prettify GraphQL queries with proper indentation. Makes complex nested queries readable and maintainable.
Test string templates with {{variable}} placeholders against JSON variables.
Preview how your page will appear in Google search results. Enter title, URL, and description to see the live search snippet preview. Everything runs locally in your browser — nothing is uploaded.
Measures your internet connection’s download speed and latency by downloading a test file from a CDN. Upload speed is not currently measured.
GraphQL Tester lets you test GraphQL queries with variables. Format queries and variables, and preview formatted responses for development and debugging. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Test GraphQL queries with variables. Format queries and variables, and preview formatted responses for development and debugging. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, GraphQL Tester runs entirely on your device with no internet connection needed. All processing is done locally.
Paste a GraphQL query and optional JSON variables, then preview the formatted query and expected response structure. It validates syntax and formats the query for readability.
No. The tester formats and validates queries locally. It does not make network requests to GraphQL servers. Use it for query preparation and debugging.
Yes. Paste JSON variables alongside your query. The tester parses both, validates variable types against the query, and shows the complete request as it would be sent.
Yes. If you paste a sample response JSON, it formats and validates it, showing the structure with proper indentation for easy inspection.
No. All testing happens locally in your browser. No query or variable data is sent to any server.
GraphQL Query Formatter
Format and prettify GraphQL queries with proper indentation. Makes complex nested queries readable and maintainable.
GraphQL Variables Formatter
Format and beautify GraphQL variables JSON with proper indentation. Ensure your variables are correctly structured before sending queries.