Ever wonder how Google knows about new websites? That’s the main purpose of a web crawler program—it discovers and indexes pages automatically.
It starts with a few URLs, then hops from link to link, saving data as it goes.
Some crawlers also check for malware or spammy content, so they’re not just indexing blindly.
It starts with a few URLs, then hops from link to link, saving data as it goes.
Some crawlers also check for malware or spammy content, so they’re not just indexing blindly.