Web Scraping
That Never Breaks.
One unified API.
Three languages.
The same Rust core powers all three SDKs with zero-copy memory sharing and identical semantics. Switch languages without rewriting your scraping logic.
- 🔧Self-healing selectors auto-fix when websites change
- 🛡️Stealth TLS rotates browser fingerprints per request
- 📦Export to JSON, CSV, or Parquet in one method call
- 👁️Watch monitors fire webhooks on any DOM change
Built for production.
Designed for developers.
Everything you need to build reliable data pipelines that survive website changes.
Self-Healing Selectors
DOM fingerprints + Jaro-Winkler similarity scoring auto-repair selectors when websites change their structure. Never write a CSS fix again.
Stealth TLS Browsing
Bypass Cloudflare Turnstile and bot detection via raw HTTP/2 with JA3/TLS fingerprint rotation. Chrome, Firefox, Safari profiles built-in.
SIMD-Accelerated
Text anchor search runs at 2.1M ops/s using parallel CPU vectors (memchr + Rayon). Extract tables even when CSS classes are absent.
Proxy Rotation
Round-robin static pool, remote proxy list provider, or per-host rotation with exponential backoff and Retry-After header support.
Change Monitoring
Poll-based DOM watchers publish typed callbacks (on_change, on_price_change, on_stock_change) and webhooks when content drifts.
Zero-Copy Rust Core
Compiled Rust engine with memory-mapped shared state across Python, Node.js, and Rust SDKs. 3,500+ req/s on commodity hardware.
One engine. Zero compromises.
A Rust core compiled once, wrapped by thin FFI layers for each language SDK.
Benchmarks don't lie.
Crawlingo outperforms pure-Python scrapers by 7×, and headless browsers by 70×.
| Metric | Crawlingo | Scrapy | Playwright |
|---|---|---|---|
| Throughput (50 concurrent) | 3,500 req/s | ~500 req/s | ~50 req/s |
| Memory (session idle) | 2.4 MB | ~50 MB | ~200 MB |
| p50 latency | 12 ms | 120 ms | 800 ms |
| Self-healing selectors | Built-in | ||
| Stealth TLS | Built-in | ||
| Change monitoring | Built-in | ||
| Multi-language SDKs | Python, Node, Rust | Python | JS, Python, C# |
Whatever you're extracting,
Crawlingo handles it.
Price & Stock Monitoring
Track competitor prices and inventory with typed callbacks. Get alerts the moment something changes.
LLM & RAG Datasets
Export clean Markdown from any site. Stream millions of URLs into Parquet for LLM fine-tuning and RAG pipelines.
SEO Auditing
Crawl 5,000+ pages, extract titles, canonical URLs, H1 counts, and meta descriptions into a structured report.
Competitive Intelligence
Scrape competitor product listings using stealth profiles that bypass bot detection — without a browser.
