Crawl budget is a vital SEO concept. Crawl budget is simply the frequency with which search engine’s crawlers (i.e., spiders and bots) go over the pages of your domain.
Crawl budget is the most important thing to keep in mind for every SEO professional.
Here are some important steps to follow to optimize your crawl budget:
1. Allow Crawling of Your Important Pages in Robots.Txt: Managing robots.txt can be done by hand, or using a website auditor tool. Simply add your robots.txt to the tool of your choice will allow you to allow/block crawling of any page of your domain in seconds. Then you’ll simply upload an edited document and you are done.
2. Watch Out for Redirect Chains: Ideally, you would be able to avoid having even a single redirect chain on your entire domain. But it’s an impossible task for a really large website – 301 and 302 redirects are bound to appear.
But a bunch of those, chained together, definitely hurt your crawl limit, to a point where search engine’s crawler might simply stop crawling without getting to the page you need indexed.
One or two redirects here and there might not damage you much, but it’s something that everybody needs to take good care of nevertheless.
3. Use HTML Whenever Possible: Google crawler have got quite a bit better at crawling not only JavaScript but also improved in crawling and indexing Flash and XML. But other search engines are not quite as advanced as Google.
So I would suggest whenever possible, you should stick to HTML. That way, you’re not hurting your chances with any crawler for sure.
4. Don’t Let HTTP Errors Eat Your Crawl Budget: 404 and 410 pages are bad for your crawl budget as well as for user experience. This is why fixing all 4xx and 5xx status codes is really very important. You can use different SEO audit tools to find pages with 4xx & 5xx errors.
5. Take Care of Your URL Parameters: Always keep in mind that separate URLs are counted by crawlers as separate pages, wasting invaluable crawl budget. Letting Google know about these URL parameters will be a win-win situation, save your crawl budget, as well as avoid raising concerns about duplicate content. So be sure to add them to your Google Search Console account.
6. Update Your Sitemap: It is really important to take care of your XML sitemap. It will help the bots to better understand where the internal links lead. Use only the URLs that are canonical for your sitemap. Also, make sure that it corresponds to the newest loaded version of robots.txt.
7. Hreflang Tags Are Vital: In order to analyze your localized pages, crawlers employ hreflang tags. And you should be telling Google about localized versions of your pages as clearly as possible. And you should use the <loc> element for any given URL. That way, you can point to the localized versions of a page.
Hopefully, these tips will help you optimize your crawl budget and improve your SEO performance.