```yaml
product: AlterLab
title: "GraphQL — Web Scraping Glossary | AlterLab"
comparison_context: "AlterLab is an alternative to Firecrawl, ScrapingBee, and Bright Data."
source_url: https://alterlab.io/glossary/graphql
```

protocol

# GraphQL

A query language for APIs that allows clients to request exactly the fields they need, commonly used by modern SPAs and a more efficient scraping target than REST.

GraphQL is a query language and runtime for APIs, developed by Facebook, that allows clients to specify exactly what data they need in a single request. Unlike REST APIs that return fixed response shapes per endpoint, a GraphQL API exposes a single endpoint that accepts declarative queries — clients define the fields, nesting, and relationships they want and receive precisely that data structure in response.

For web scraping, GraphQL APIs are a valuable target when a site uses one as its data backend. Many modern SPAs (Instagram, Twitter/X, Shopify, GitHub) use GraphQL to power their frontends. Intercepting the GraphQL queries made by the page's JavaScript reveals the API endpoint and the query structure — which can then be replicated directly to retrieve structured data without any HTML parsing.

The advantages of scraping GraphQL endpoints versus scraping rendered HTML include: consistently typed, schema-validated responses; the ability to request only needed fields; introspection capabilities that reveal the full API schema; and resilience against frontend redesigns. The challenges include schema introspection being disabled on some endpoints and authentication requirements. AlterLab's network interception mode can capture GraphQL responses during page rendering.

### What is GraphQL?

A query language for APIs that allows clients to request exactly the fields they need, commonly used by modern SPAs and a more efficient scraping target than REST.

### How does AlterLab handle GraphQL?

The advantages of scraping GraphQL endpoints versus scraping rendered HTML include: consistently typed, schema-validated responses; the ability to request only needed fields; introspection capabilities that reveal the full API schema; and resilience against frontend redesigns. The challenges include schema introspection being disabled on some endpoints and authentication requirements. AlterLab's network interception mode can capture GraphQL responses during page rendering.

## Examples

```
# Intercepting a GraphQL query
{
  "url": "https://spa-example.com/products",
  "render_js": "auto",
  "intercept_urls": ["**/graphql", "**/api/graphql"]
}
```

## Related Terms

[REST APIA web service that exposes data and actions through standard HTTP methods and resource-oriented URLs, returning structured JSON responses.](https://alterlab.io/glossary/rest-api)[Network InterceptionCapturing XHR/fetch API responses made by a page's JavaScript during browser rendering to extract structured data directly from network calls.](https://alterlab.io/glossary/network-interception)[JSONJavaScript Object Notation — the universal text format for structured data exchange between APIs and web services.](https://alterlab.io/glossary/json)[JavaScript RenderingThe process of executing a page's JavaScript in a browser engine before extracting content, required for React, Vue, and Angular SPAs.](https://alterlab.io/glossary/javascript-rendering)[Structured Data ExtractionConverting free-form HTML into typed JSON records using explicit schemas, producing clean structured output instead of raw markup.](https://alterlab.io/glossary/structured-data-extraction)

## Extract GraphQL data from any website

AlterLab returns clean, structured data from any public URL — no scraper infrastructure needed. Start free, no credit card required.

[View API docs](https://alterlab.io/docs/api/rest)

[Back to Glossary](https://alterlab.io/glossary)