GET man7.org HTTP 2001.1 s3.4 KB$0.000027 captured Aug 7, 2026
man7.org, as data
One API turns any man7.org page into markdown, structured JSON, its link graph or a screenshot, and crawls the whole site the same way. The panel shows the real response we captured.
- Render mode
- Plain HTTP, no browser needed
- Response
- HTTP 200 in 1.1 s
- Page size
- 3.4 KB of markdown, 84 lines
- Fields
- Business Name, Address, Phone, Category and 2 more
- Captured
- Aug 7, 2026
Free balance on signup, no card. This man7.org page cost $0.000027 to fetch.
## DESCRIPTION topUnregister a memory address range from userfaultfd. The pages inthe range must be “compatible” (see UFFDIO_REGISTER(2const)).## RETURN VALUE topOn success, 0 is returned. On error, -1 is returned and *errno* is## ERRORS top**EINVAL **Either *argp->start* or the *argp->len* fields was not amultiple of the system page size; or the *argp->len* fieldwas zero; or these fields were otherwise invalid.**EINVAL **There as an incompatible mapping in the specified address**EINVAL **There was no mapping in the specified address range.## STANDARDS top## HISTORY top## EXAMPLES top## SEE ALSO topioctl(2), ioctl_userfaultfd(2), UFFDIO_REGISTER(2const),*linux.git/Documentation/admin-guide/mm/userfaultfd.rst*## COLOPHON topThis page is part of the *man-pages* (Linux kernel and C libraryuser-space interface documentation) project. Information about⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.This page was obtained from the tarball man-pages-6.18.tar.gz⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on2026-05-24. If you discover any rendering problems in this HTMLversion of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections orimprovements to the information in this COLOPHON (which is *not*part of the original manual page), send a mail toLinux man-pages 6.18 2026-02-08 *UFFDIO_UNREGISTER*(2const)Pages that refer to this page:What Spider does on man7.org
Same key, five endpoints. The numbers under a cell were measured on this page.
Page to markdown
Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.
1.1 s · $0.000027Page to JSON
Spider reads the page and names the fields. Pass your own schema when you need exact keys.
Rendered capture
Real Chromium, full-page PNG. The same call also returns the rendered HTML.
The call behind the panel
This request produced the response above. Paste it with your key and you get the same bytes.
curl -X POST https://api.spider.cloud/scrape \
-H "Authorization: Bearer $SPIDER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://www.man7.org/linux/man-pages//man2/UFFDIO_UNREGISTER.2const.html", "return_format": "markdown"}'from spider import Spider
app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://www.man7.org/linux/man-pages//man2/UFFDIO_UNREGISTER.2const.html", params=params)
print(page[0]["content"])import { Spider } from "@spider-cloud/spider-client";
const app = new Spider();
const [page] = await app.scrapeUrl("https://www.man7.org/linux/man-pages//man2/UFFDIO_UNREGISTER.2const.html", {
return_format: "markdown",
});
console.log(page.content);What man7.org costs
Multiplied from the measured 3.4 KB page. Estimates round to the cent.
1 GB of transfer costs $1, plus $0.001 per CPU minute, and failed requests cost $0. Crawling daily? The Unlimited plan is a flat monthly rate.
Point this at the rest of man7.org.
The capture above took 1.1 s and cost $0.000027. The same call takes any URL on man7.org.