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GET rsms.me HTTP 200239 ms4.0 KB$0.000025 captured Aug 7, 2026

rsms.me, as data

One API turns any rsms.me 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.

target profile from the capture
Render mode
Plain HTTP, no browser needed
Response
HTTP 200 in 239 ms
Page size
4.0 KB of markdown, 64 lines
Fields
Title, Content, Date, Source and 2 more
Captured
Aug 7, 2026

Free balance on signup, no card. This rsms.me page cost $0.000025 to fetch.

response 200 · 239 ms · 4.0 KB
# Hello, I'm Rasmus### Browser pixel-rounding playgroundTests how different web browsers round geometry to pixels, dp, etc.### EstrellaLight-weight runner for the esbuild compiler### Pointer latency playgroundExplore web browser input pointer latency and try predictive tracking### Bézier tangentToy that derives the tangent and normal from an arbitrary point of a Bézier curve### Markdown WASMFast Markdown parser and HTML renderer implemented in WebAssembly### See all 75 projects →## Thoughts & ideas### Introduction to WebAssemblyWebAssembly is a new technology for running portable programs in a safe and efficient manner, represented by a low-level virtual-machine assembly, primarily aimed at the web platform. This article gives a practical introduction to WebAssembly.### GotalkGotalk exists to make it easy for programs to talk with one another over the internet, like a web app coordinating with a web server, or a bunch of programs dividing work amongst eachother.### The 1950s called and wanted their toolbox backYour favourite fancy-pants modern programming language is from the 1950s. Pretty much any programming language used today is a derivative of Fortran or Lisp, both born in the 1950s. Okay, reality check: It’s 2013—yes, 60 years later—and we have cars that drive themselves on the street, robots roaming the surface of alien planets and tiny networked devices with interactive surfaces that we keep in our pockets, which are orders of magnitude more powerful than the computers of the 1950s.### The Definition of Design### Sol — a sunny little virtual machineDuring this weekend, together with a few evenings earlier this week, I created a rather simple virtual machine dubbed Sol, after the Swedish word for sun. It’s register based with multitasking and timers.### Browse all 512 articles →I’m a Swedish he/him living in SanFrancisco, California.Software is the medium through which I express myself.
POST /scrape · rsms.me/index.md · markdown · Showing 25 of 64 lines · captured Aug 7, 2026

What Spider does on rsms.me

Same key, five endpoints. The numbers under a cell were measured on this page.

/scrape

Page to markdown

Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.

239 ms · $0.000025
/fetch

Page to JSON

Spider reads the page and names the fields. Pass your own schema when you need exact keys.

/crawl

Whole site

Follows rsms.me's own links, respects robots, streams pages as they land.

/links

Link graph

Every internal and external URL on a page, before you decide what to fetch.

/screenshot

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.

request scrape.sh
curl -X POST https://api.spider.cloud/scrape \
  -H "Authorization: Bearer $SPIDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://rsms.me/", "return_format": "markdown"}'
plain request · no browser, no selectors

What rsms.me costs

Multiplied from the measured 4.0 KB page. Estimates round to the cent.

cost measured
This page, once 4.0 KB over HTTP, measured $0.000025
This page, daily for a month 30 fetches at the measured price ≈ $0.000753
1,000 pages this size 3.9 MB at the measured price ≈ $0.03
10,000 pages this size 39.2 MB at the measured price ≈ $0.25

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 rsms.me.

The capture above took 239 ms and cost $0.000025. The same call takes any URL on rsms.me.

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