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.
- 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.
# 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. What Spider does on rsms.me
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.
239 ms · $0.000025Page 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://rsms.me/", "return_format": "markdown"}' from spider import Spider
app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://rsms.me/", params=params)
print(page[0]["content"]) import { Spider } from "@spider-cloud/spider-client";
const app = new Spider();
const [page] = await app.scrapeUrl("https://rsms.me/", {
return_format: "markdown",
});
console.log(page.content); What rsms.me costs
Multiplied from the measured 4.0 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 rsms.me.
The capture above took 239 ms and cost $0.000025. The same call takes any URL on rsms.me.