Gramosoft Insights
Scraping Insights For Modern AI Data
Discover strategies for structured data, crawling, scraping, LLMs, and RAG to build smarter and more efficient data workflows.
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Web Scraping Errors: 15 Common HTTP Errors and How to Fix Them
The 15 HTTP errors web scrapers hit most (400, 401, 403, 404, 407, 408, 410, 429, 444, 451, 500, 502, 503, 504 and Cloudflare 520 to 524), what each one means, which to retry, and how to fix them, with a Python classifier, a retry loop with jitter and Retry-After, soft-block checks, and what failed requests cost on GcrawlAI, ScraperAPI, ZenRows and ScrapingBee.
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Residential vs Datacenter Proxies, and How IP Rotation Works (2026 Guide)
Residential, datacenter, ISP and mobile proxies explained: who owns the IP, what each costs (Decodo and Oxylabs prices checked November 1, 2026), how IP rotation and sticky sessions work, which rotation strategy fits which job, a Python proxy rotator with an offline test, and how GcrawlAI builds residential IPs and rotation into every request.
10 Best User Agents for Web Scraping in 2026: Current Strings, Matching Headers and Rotation
The 10 best user agents for web scraping in 2026: GcrawlAI's real-browser identity plus current Chrome 156, Edge 156, Firefox 159 and Safari 27 strings for Windows, macOS, Linux, Android and iPhone, the Client Hints and headers each needs, user agents to avoid, and Python code to set, check and rotate them per session.
How to Bypass Cloudflare When Web Scraping (2026)
Cloudflare runs several checks at once, and each fails in its own way. Learn to read the block, fix your TLS fingerprint with curl_cffi, clear JavaScript challenges with a headful stealth browser, and reuse cf_clearance safely, with code tested against a local Cloudflare-style gate.
Best Free Proxy Sites for Web Scraping in 2026
Free proxies come in three kinds: open public lists, free plans from proxy providers, and scraping APIs with proxies built in. We checked the best of each, analysed four popular free lists, and built a proxy checker that catches dead, leaky and tampering proxies.