Spider.fast
Web Scraping, Crawling & Monitoring
Stop building fragile web scrapers. Spider.fast delivers enterprise-grade crawling, data extraction, uptime monitoring, and performance testing. Handle JavaScript, bypass blocks, respect robots.txt, export to any format. Trusted by 47,892 developers extracting billions of data points monthly.
The Problem We're Solving
Manual scraping is costing you millions
❌ The Old Way (DIY Scraping)
- • Brittle CSS selectors break every site redesign
- • JavaScript sites return empty HTML responses
- • IP bans block your scrapers after 10 requests
- • Manual data cleaning takes longer than scraping
- • No monitoring means discovering downtime from angry users
✅ The Spider.fast Way
- • Smart selectors auto-heal when sites change structure
- • Headless browser renders React, Vue, Angular perfectly
- • Stealth mode + rotation prevents detection and blocking
- • Auto-clean exports to JSON, CSV, Excel, databases
- • 24/7 uptime monitoring alerts before revenue impact
How It Works
Four powerful tools in one platform
Web Scraping
Extract structured data from any website. Point-and-click selector builder. Handles pagination, infinite scroll, multi-page workflows. Export to JSON, CSV, Excel, databases. Schedule recurring scrapes or trigger via API.
Site Crawling
Discover every page on a website. Follow links recursively. Map site architecture. Detect broken links, missing images, slow pages. Generate sitemaps. Perfect for SEO audits and content inventory.
Uptime Monitoring
Monitor websites 24/7 from global locations. Check every 1-60 minutes. Validate HTTP status, response time, SSL certs, custom content. Alert via email, Slack, SMS. Detailed incident reports.
Performance Testing
Measure page load times, Core Web Vitals, resource sizes. Simulate slow networks. Test from different geolocations. Identify performance bottlenecks. Waterfall charts show what's slowing you down.
Advanced Features
Enterprise-grade capabilities built in
JavaScript Rendering
Headless Chrome renders React, Vue, Angular, Next.js sites. Waits for AJAX, handles lazy loading, executes client-side routing. Captures final DOM state, not initial HTML.
Stealth Mode
Mimics real browser behavior to avoid detection. Rotates user agents, manages cookies, handles CAPTCHAs, respects rate limits. Polite crawling prevents IP bans.
Smart Selectors
Visual selector builder with auto-healing. When sites redesign, selectors adapt automatically. Fallback strategies prevent failures. No manual maintenance.
Multi-Format Export
Export to JSON, CSV, Excel, XML. Direct database connections (MySQL, PostgreSQL, MongoDB). API webhooks push data real-time. Custom transformations clean data inline.
Scheduled Scraping
Cron-style scheduling runs scrapes automatically. Hourly, daily, weekly, or custom intervals. Email results, save to storage, trigger webhooks. Set it and forget it.
Instant Alerts
Get notified when sites go down, slow down, or change. Email, Slack, SMS, Discord, webhooks. Custom alert rules. Escalation policies. Detailed incident timelines.
Tools & Integrations
Works with your favorite platforms
Python SDK
Node.js SDK
PostgreSQL
MongoDB
Slack
Zapier
Google Cloud
AWS
Why Choose Spider.fast
Proven results from real deployments
92% Time Savings
Automated scraping runs 24/7 without manual intervention. What took data analysts 40 hours/week now completes in 3. Teams redirect effort to analysis instead of data collection.
99.8% Uptime
Monitoring from 15 global locations catches outages instantly. Average detection time: 47 seconds. Customers get alerted and fixed before major revenue impact.
10B+ Pages Crawled
Proven at scale. Handles high-traffic sites, respects rate limits, maintains reliability. From small sites to enterprise platforms with millions of pages.
95% Block Prevention
Smart rotation and stealth mode prevent detection. Automatic retry with backoff. Respects robots.txt and crawl-delay. Ethical scraping that doesn't get banned.
Real-World Applications
How teams use Spider.fast
E-Commerce: Competitive Price Intelligence
Online retailer scrapes competitor pricing every 6 hours. 12,000 products monitored across 8 competitors. Automatic price adjustments maintain 5% margin. Increased market share 18% in 6 months. Spider.fast handles pagination, handles AJAX product listings, exports to pricing engine via API.
SaaS: G2/Capterra Review Monitoring
Product team scrapes review sites daily for customer feedback. Instant Slack alerts for new reviews. Sentiment analysis identifies feature requests. Response time to negative reviews dropped from 5 days to 2 hours. Customer satisfaction up 23%.
Real Estate: Property Listing Aggregation
Real estate platform scrapes 25 listing sites to aggregate inventory. Handles map interfaces, filters, image galleries. 45,000 properties updated hourly. JavaScript rendering extracts data hidden client-side. Built comprehensive database no competitor can match.
Agency: 100-Client Website Monitoring
Digital agency monitors all client websites for downtime and performance. Checks every 5 minutes from 10 locations. SSL expiry alerts 30 days early. Catches issues before clients notice. Saved $280K in lost revenue from prevented outages.
Finance: Regulatory Filing Extraction
Investment firm scrapes SEC EDGAR for 10-K filings. Extracts financials from PDFs and HTML. Monitors 500 companies. Updates database within minutes of filings. Trading algorithms react before competitors. Spider.fast's scheduling runs every 15 minutes during market hours.
SEO: Complete Site Audit for 50,000 Pages
SEO consultant crawls enterprise client sites. Finds broken links, duplicate content, missing meta tags, slow pages. Generates comprehensive reports. Crawled 50,000-page site in 4 hours. Identified 1,200 fixable issues. Client's organic traffic up 42% after fixes.
Best Practices
Scraping ethically and effectively
Respect robots.txt
Always check robots.txt before scraping. Follow crawl-delay rules. Don't scrape disallowed paths. Ethical scraping maintains access and avoids legal issues. Spider.fast enforces this automatically.
Use Polite Crawling
Add delays between requests (1-5 seconds). Don't hammer servers with parallel requests. Scrape during off-peak hours for high-traffic sites. Being polite prevents IP bans and maintains goodwill.
Handle Errors Gracefully
Implement exponential backoff for failures. Log errors for debugging. Have fallback selectors. Don't crash entire scrape on single page error. Resilient scraping completes successfully.
Cache Intelligently
Don't re-scrape unchanged data. Use ETags and Last-Modified headers. Check if content changed before full parse. Caching reduces bandwidth and speeds up scrapes dramatically.
Monitor and Alert
Set up alerts for scrape failures. Monitor success rates. Track response times. Get notified when site structure changes break selectors. Proactive monitoring prevents stale data.
Test Before Production
Test selectors on sample pages first. Verify data extraction is accurate. Check edge cases and error handling. Run small test scrapes before large crawls. Testing prevents wasting resources on broken scrapers.
Start Crawling Today
From manual scraping to automated intelligence
Spider.fast is part of the NextGen.fast ecosystem, bringing enterprise web scraping, crawling, and monitoring to your workflow. Join 47,892 developers extracting billions of data points with Spider.fast.
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