CK-12 Scraper
Extract K-12 textbook chapters, interactive simulations, practice exercises, and adaptive learning paths from CK-12.
curl -X POST https://api.spider.cloud/scrape \
-H "Content-Type: application/json" \
-d '{"url": "https://ck12.org", "return_format": "markdown"}'Returns ck12.org as markdown, live. Get a key →
We have not stored a capture of ck12.org, so there is nothing real to show here yet. Run the call above and you get the live page back as markdown.
The same call, in code.
The keyless call above returns markdown. These examples add a key, so you get browser rendering, proxies, and concurrency on ck12.org.
import { SpiderBrowser } from "spider-browser";
const spider = new SpiderBrowser({
apiKey: process.env.SPIDER_API_KEY!,
});
await spider.connect();
const page = spider.page!;
await page.goto("https://www.ck12.org/browse/");
// No selectors, no schema. Spider reads the page and names the fields.
const data = await page.scrape();
console.log(data);
await spider.close();import { SpiderBrowser } from "spider-browser";
const spider = new SpiderBrowser({
apiKey: process.env.SPIDER_API_KEY!,
});
await spider.connect();
const page = spider.page!;
await page.goto("https://www.ck12.org/browse/");
const data = await page.evaluate(`(() => {
const subjects = [];
document.querySelectorAll(".subject-card").forEach(el => {
const name = el.querySelector(".subject-title")?.textContent?.trim();
const concepts = el.querySelector(".concept-count")?.textContent?.trim();
const description = el.querySelector(".subject-description")?.textContent?.trim();
const grades = el.querySelector(".grade-range")?.textContent?.trim();
if (name) subjects.push({ name, concepts, description, grades });
});
return JSON.stringify({ total: subjects.length, subjects: subjects.slice(0, 15) });
})()`);
console.log(JSON.parse(data));
await spider.close();Ready for volume? Get an API key →
Fields you can pull.
What ck12.org costs to scrape.
Pricing is $1 per GB of pre-transformation bandwidth plus $0.001 per CPU minute, so most pages land at a fraction of a cent. Failed requests are billed at $0.
- Free balance on signup
- No card required to test
- Balance never expires
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Start scraping ck12.org.
You already have the call. A key raises the rate limit and turns on browser rendering, proxies, and concurrency. Balance never expires, and top-ups go through secure checkout.