Most public proxies are "dead" or extremely slow. The checker tests these IPs against specific targets (like Google, Amazon, or a custom URL) to see if they are active, determine their speed, and identify their anonymity level (Transparent, Anonymous, or Elite). Top Proxy Grabbers and Checkers in 2026 1. ScrapeBox (The "Swiss Army Knife")
It includes a port scanner and can bypass many common scraping protections. proxy grabber and checker top
ScrapeBox remains the industry standard for a reason. While it is a massive SEO tool, its built-in proxy harvester and checker are legendary. Most public proxies are "dead" or extremely slow