By capability · JS rendering

JavaScript rendering scraper for dynamic web pages

Many modern sites send almost no content in their initial HTML, the page is built in the browser by JavaScript. A scraper that only reads raw HTML gets an empty shell. ClawEngine is a JavaScript rendering scraper: it loads each page in a real browser environment, waits for the content to build, and only then extracts clean markdown or structured JSON.

That means single-page apps, infinite-scroll listings and client-rendered content come back complete. You get the rendered result without running or scaling a headless browser yourself. ClawEngine renders only public, permitted pages, respects robots.txt and site Terms of Service, and honors crawl-delay, so dynamic scraping stays compliant.

or try it below ↓

Clean markdown & JSON · JavaScript rendered · robots.txt respected

Live Extraction

Endpoint · POST /v1/extract

GET

try:

Hit Extract to turn this page into clean, LLM-ready data.

robots.txt respected · public data only

Markdown · JSON · structured fields, from one API call. Crawling, rendering and extracting ...

CRAWL RENDER JS EXTRACT MARKDOWN JSON

Any URL in LLM-ready data out

robots.txt respected public data only

Why it works

What you get with js rendering

Real browser rendering

Pages load in a real browser environment and ClawEngine waits for content to build, so client-rendered sites come back complete, not empty.

Dynamic content captured

Single-page apps and scripted listings are fully rendered before extraction, so the data users see is the data you get.

No headless fleet

Rendering runs inside the API, so you skip provisioning, scaling and patching a headless browser cluster just to read modern pages.

What it handles

Any URL in, clean structured data out

Point ClawEngine at a public page and it crawls, renders the JavaScript and extracts clean markdown or typed JSON in one call. Define a schema for structured fields, and respect robots.txt and Terms of Service by default.

Loads pages in a real browser environment
Waits for JavaScript content to build
Scrapes single-page apps completely
Returns clean markdown or JSON
Removes the need to run a headless fleet
Stays on public, permitted pages only

POST /v1/extract extraction result

200 · JSON

{
  "url": "https://example.com/products/atlas",
  "title": "Atlas Field Notebook",
  "markdown": "# Atlas Field Notebook\n\nDurable...",
  "data": {
    "name": "Atlas Field Notebook",
    "price": 24.00,
    "currency": "USD",
    "rating": 4.7
  },
  "links": [ "/products", "/cart" ],
  "metadata": { "rendered": true }
}

JS rendered · boilerplate stripped ✓ robots.txt respected

Why ClawEngine

One API that crawls, renders and extracts

Not a raw HTML dump, not a headless browser fleet to run, and not a brittle parser to maintain. One call crawls a public page, renders its JavaScript and returns clean markdown or typed JSON, built for RAG pipelines and AI agents.

LLM-ready output

Clean markdown or typed JSON with the boilerplate stripped, so the data drops straight into a vector store, a prompt or an agent without a cleanup step.

JavaScript rendered

Each page loads in a real browser environment before extraction, so single-page apps and client-rendered content come back complete, not as an empty shell.

Compliance-first

ClawEngine works on public, permitted data only. It respects robots.txt and site Terms of Service and honors crawl-delay, so responsible scraping is the default.

Good questions

Questions about js rendering

On many modern sites the initial HTML is nearly empty and the content is assembled by JavaScript in the browser. Without rendering, a scraper sees a shell. ClawEngine renders the page first, so the extracted markdown or JSON reflects the fully built content.

No. Rendering happens inside the ClawEngine API, so there is no headless browser to run or scale on your side. It processes public, permitted pages only and respects robots.txt and Terms of Service.

Read every web scraping question

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More ways to turn the web into data with ClawEngine

See every use case See pricing Back to the web scraping API

Stop wrangling raw HTML. Get LLM-ready data.

Point ClawEngine at a public page and one call crawls, renders the JavaScript and extracts clean markdown or typed JSON, ready for your RAG pipeline or AI agent. Public, permitted data only.

See pricing

Crawl · render JS · extract markdown & JSON · robots.txt respected, public data only