# JsonLink

> JsonLink is a REST API that turns any URL into structured data: link metadata (title, description, images, favicon) for link previews, the main content as clean Markdown for LLMs and RAG, and website screenshots (PNG/JPG, full page, retina). One API key and shared credits cover every endpoint. Free plan: 100 credits every month, no credit card.

Base URL: `https://jsonlink.io/api`. Authenticate with your API key in the `api_key` query parameter (Markdown also accepts it in the JSON body). Get a free key at https://jsonlink.io/signup.

## Endpoints

- [GET /api/extract](https://jsonlink.io/llms-full.txt#get-apiextract): link metadata — title, description, images, favicon, sitename, domain. 1 credit.
- [POST /api/markdown](https://jsonlink.io/llms-full.txt#post-apimarkdown): main page content as GitHub-flavored Markdown, plus title, language and word count. 1 credit.
- [GET /api/screenshot](https://jsonlink.io/llms-full.txt#get-apiscreenshot): PNG or JPG screenshot, viewport or full page, up to 3× scale. 2 credits.
- [GET /api/links](https://jsonlink.io/llms-full.txt#get-apilinks): every link on a page with anchor text, rel and internal/external type. 1 credit.
- [GET /api/images](https://jsonlink.io/llms-full.txt#get-apiimages): every image on a page with size, format and dimensions. 1 credit.

## Docs

- [Full API reference for LLMs](https://jsonlink.io/llms-full.txt): every endpoint, parameter, response and error in one Markdown file.
- [API documentation](https://jsonlink.io/docs): the same reference for humans.
- [Extract metadata endpoint](https://jsonlink.io/docs/extract)
- [Screenshot endpoint](https://jsonlink.io/docs/screenshot)
- [Markdown endpoint](https://jsonlink.io/docs/markdown)
- [Links endpoint](https://jsonlink.io/docs/links)
- [Images endpoint](https://jsonlink.io/docs/images)
- [MCP server](https://jsonlink.io/docs/mcp): connect JsonLink to Claude, Cursor or VS Code (`npx -y jsonlink-mcp`).
- [Credits](https://jsonlink.io/docs/credits), [rate limits](https://jsonlink.io/docs/rate-limits) and [errors](https://jsonlink.io/docs/errors)
- [Pricing](https://jsonlink.io/pricing): plans, credits and rate limits.

## Product pages

- [Link Metadata API](https://jsonlink.io/metadata-scraper)
- [URL to Markdown API](https://jsonlink.io/url-to-markdown)
- [Website Screenshot API](https://jsonlink.io/screenshot-api)

## Optional

- [Link preview generator](https://jsonlink.io/link-preview-generator): free online tool.
- [Link extractor](https://jsonlink.io/link-extractor): free online tool.
- [Extract images from URL](https://jsonlink.io/extract-images-from-url): free online tool.