#cloudflare

A practical guide to web unblockers for scraping: how they differ from plain proxies, what problems they solve (and don’t), what to evaluate, and a shortlist of reputable options.

A web unblocker is more than a proxy: it’s a managed stack (rotation, headers, retries, sometimes rendering) that turns blocked pages into usable HTML. Here’s how they work and how to choose.

Explain what Cloudflare 520 usually signals in scraping workflows and give a practical checklist to reduce and debug it.

A practical guide to reducing Cloudflare blocks with better fingerprints, session reuse, rate control, and smarter escalation paths.

Error 520 is Cloudflare’s generic 'unknown origin' failure. Here’s how to diagnose it (vs 403/1020/524) and fix it with TLS hygiene, headers, session handling, retries, and proxy rotation patterns using ProxiesAPI.