Crawl Budget Not Affected by Response Time of Third Party Tags
For Google, crawl budget is determined by how many pages and resources they fetch from a website per day. If a page has a large response time they may crawl the site less to avoid overloading the server, but this will not be affected by any third party tags on the page.
Putting Resources on a Separate Subdomain May Not Optimize Crawl Budget
Google can still recognise if subdomains are part of the same server and will therefore distribute crawl budget for the server as a whole as it is still having to process all of the requests. However, putting static resources on a CDN will balance crawling across the two sources independently.
Check Server Logs If More Pages Crawled Than Expected
Crawl Budget Updates Based on Changes Made to Site
A site’s crawl budget changes a lot over time, as Google’s algorithms react quickly to changes made to a website. For example, if a new CMS is launched incorrectly with no caching and it’s slow, then Googlebot will likely slow down crawling over the next couple of days so that the server isn’t overloaded.
Use Log Files to Identify Crawl Budget Wastage & Issues With URL Structure
When auditing eCommerce sites, John recommends first looking at what URLs are crawled by Googlebot. Then identify crawl budget wastage and perhaps change the site’s URL structure to stop Googlebot crawling unwanted URLs with parameters, filters etc.
Small to Medium-Sized Sites Don’t Have to Worry About Crawl Budget
Sites with ‘a couple hundred thousand pages’ or fewer don’t need to worry about crawl budget, Google will be able to crawl them just fine.
4xx Errors Don’t Mean Your Crawl Budget is Being Wasted
Seeing Googlebot crawling old 404/410 pages doesn’t mean your crawl budget is being wasted. Google will revisit these when there is nothing else on the site to be crawled, which is a sign of capacity to crawl more.
Google AdsBot Crawling Doesn’t Impact Crawl Budget For Organic Search
If Google AdsBot is crawling millions of ad pages then this won’t eat into your crawl budget for organic search. John recommends checking for tagged URLs in any ad campaigns to reduce ad crawling.