A web crawler tool emulates search engine bots. Web crawlers are indispensable for search engine optimization. But leading crawlers are so comprehensive that their findings — lists of URLs and the various statuses and metrics of each — can be overwhelming.
For example, a crawler can show (for each page):
- Number of internal links,
- Number of outbound links,
- HTTP status code,
- A noindex meta tag or robots.txt directive,
- Amount of non-linked text,
- Number of organic search clicks the page generated (if the crawler is connected to Search Console or Google Analytics),
- Download speed.
Crawlers can also group and segment pages based on any number of filters, such as a certain word in a URL or title tag.
There are many quality SEO crawlers, each with a unique focus. My favorites are Screaming Frog and JetOctopus.
Screaming Frog is a desktop app. It offers a limited free version for sites with 500 or fewer pages. Otherwise, the cost is approximately $200 per year. JetOctopus is browser-based. It offers a free trial and costs $160 per month. I use JetOctopus for larger sophisticated sites and Screaming Frog’s free version for smaller sites.
Regardless, here are the top six SEO issues I look for when crawling a site.
Using Web Crawlers for SEO
Error pages and redirects. The first and main reason for crawling a site is to fix all errors (broken links, missing elements) and redirects. Any crawler will give you quick access to those errors and redirects, allowing you to fix each of them....
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