Comparison
13x vs a technical SEO crawler
What a technical SEO crawler is good at
Crawling at depth. A dedicated crawler will walk a hundred thousand URLs, hold the whole link graph in memory, and let you pivot on any field in it. If you are diagnosing a large content site, that is the tool, and nothing here replaces it.
Tools of this kind include Screaming Frog, Sitebulb and the site-audit module in a suite. This page compares the category rather than any one product, because what a named tool does changes and a table that is wrong about somebody else’s product is worse than no table.
Where the overlap ends
The output is a list of URLs and error classes. Turning that into a change means knowing your stack, and knowing which of the four hundred rows matters this week. On a product with forty pages, the crawl is the easy part and the triage is the whole job.
Side by side
What do I get at the end?
- a technical SEO crawler
- A list of URLs and the rule each one violates, exportable.
- 13x
- A finding with its evidence, what it costs, and the code to change — resolved for the framework detected from your response.
How many URLs does it cover?
- a technical SEO crawler
- Tens of thousands, and depth is the point.
- 13x
- A sample of your product's pages. This is not the tool for a large content site.
Does it check whether AI crawlers can reach me?
- a technical SEO crawler
- Increasingly a robots.txt read. Rarely a request as each agent.
- 13x
- Both. robots.txt is parsed per agent, and the page is requested as each agent to record the status it actually receives.
Does it check my email records?
- a technical SEO crawler
- Out of scope. SEO crawlers crawl HTTP.
- 13x
- SPF, DKIM, DMARC and MX, read from DNS.
Does it check GDPR and Impressum obligations?
- a technical SEO crawler
- Out of scope.
- 13x
- Presence and reachability of the legal pages, whether tracking fires before consent, and fonts loaded from a third-party CDN. Detection, never legal advice.
What happens after the first run?
- a technical SEO crawler
- You run it again when you remember to.
- 13x
- Scheduled re-audits, a diff against the last one, and a queue ordered by impact.
Every claim in the 13x column is checkable against the public rule registry, which lists all 113 rules with their weights and scope.
When not to switch
If you run a large publisher or an ecommerce catalogue and your job is crawl budget and faceted-navigation control at scale, buy the crawler. 13x is built for a product with tens of pages where the question is not "which of these 40,000 URLs" but "what do I change before Thursday".
See what it finds on your product
113 checks against your live URL, in about 30 seconds. No account. Every failing check comes back with its evidence and the fix for the framework we detect.
No signup. Results in 30 seconds.