node-crawlervsbotasaurus
node-crawler is a popular web scraping library for Node.js that allows you to easily navigate and extract data from websites. It has a simple API and supports concurrency, making it efficient for scraping large numbers of pages.
Features:
- Server-side DOM & automatic jQuery insertion with Cheerio (default) or JSDOM,
- Configurable pool size and retries,
- Control rate limit,
- Priority queue of requests,
- forceUTF8 mode to let crawler deal for you with charset detection and conversion,
- Compatible with 4.x or newer version.
- Http2 support
- Proxy support
Botasaurus is an all-in-one Python web scraping framework that combines browser automation, anti-detection, and scaling features into a single package. It aims to simplify the entire web scraping workflow from development to deployment.
Key features include:
- Anti-detect browser Ships with a stealth-patched browser that passes common bot detection tests. Automatically handles fingerprinting, user agent rotation, and other anti-detection measures.
- Decorator-based API Uses Python decorators (@browser, @request) to define scraping tasks, making code clean and easy to organize.
- Built-in parallelism Easy parallel execution of scraping tasks across multiple browser instances with configurable concurrency.
- Caching Built-in caching layer to avoid re-scraping pages during development and debugging.
- Profile persistence Can save and reuse browser profiles (cookies, localStorage) across scraping sessions for maintaining login state.
- Output handling Automatic output to JSON, CSV, or custom formats with built-in data filtering.
- Web dashboard Includes a web UI for monitoring scraping progress, viewing results, and managing tasks.
Botasaurus is designed for developers who want a batteries-included framework that handles anti-detection automatically, without needing to manually configure stealth settings or manage browser fingerprints.
Highlights
anti-detectstealthlarge-scale
Example Use
```javascript
const Crawler = require('crawler');
const c = new Crawler({
maxConnections: 10,
// This will be called for each crawled page
callback: (error, res, done) => {
if (error) {
console.log(error);
} else {
const $ = res.$;
// $ is Cheerio by default
//a lean implementation of core jQuery designed specifically for the server
console.log($('title').text());
}
done();
}
});
// Queue just one URL, with default callback
c.queue('http://www.amazon.com');
// Queue a list of URLs
c.queue(['http://www.google.com/','http://www.yahoo.com']);
// Queue URLs with custom callbacks & parameters
c.queue([{
uri: 'http://parishackers.org/',
jQuery: false,
// The global callback won't be called
callback: (error, res, done) => {
if (error) {
console.log(error);
} else {
console.log('Grabbed', res.body.length, 'bytes');
}
done();
}
}]);
// Queue some HTML code directly without grabbing (mostly for tests)
c.queue([{
html: '
This is a test
' }]); ```
```python
from botasaurus.browser import browser, Driver
from botasaurus.request import request, Request
# Browser-based scraping with anti-detection
@browser(parallel=3, cache=True)
def scrape_products(driver: Driver, url: str):
driver.get(url)
# Wait for content to load
driver.wait_for_element(".product-list")
# Extract product data
products = []
for el in driver.select_all(".product-card"):
products.append({
"name": el.select(".product-name").text,
"price": el.select(".product-price").text,
"url": el.select("a").get_attribute("href"),
})
return products
# HTTP-based scraping (no browser needed)
@request(parallel=5, cache=True)
def scrape_api(req: Request, url: str):
response = req.get(url)
return response.json()
# Run the scraper
results = scrape_products(
["https://example.com/page/1", "https://example.com/page/2"]
)
```
Alternatives / Similar
katana
new
crawl4ai
new
scrapling
new
crawlee
new
mechanize
new
scrapegraphai
new
botasaurus
new
goutte
new
kimurai
new
firecrawl
new