How does your site compare?
Paste your site and a competitor's. Both are crawled from outside the network with the same checks, then shown side by side, so you can see what they do better and what you already do well.
A set of pages from each site, read the same way for both. Nothing is stored.
What this compares
The same checks on both URLs: reachability, indexation, markup, links, delivery and, for stores, catalogue, then a per-check difference. It does not invent competitor keywords or backlinks; those need a licensed data set, so it compares the signals each site actually serves.
What the competitor SEO comparison runs
The comparison crawls two public sites with the same bounded set of checks and the same sample size, then shows the results side by side. It reports the errors and warnings each site carries per check, a score for each site from the same formula, and the per-check difference so you can see where each is stronger.
Both sites are read the same way, so neither is favoured by size: a large site and a small one get the same number of pages. It does not run a full crawl of either site. The sample is a set of pages from each, which is enough for a like-for-like read.
How to read a comparison
The headline states which site scores higher and by how many points. The table lists each check with the error and warning counts for both sites and marks the edge. The findings behind each count are listed, so a claim such as three errors can be checked rather than taken on faith.
A higher score means one site had fewer, or less serious, findings in the sample. It does not measure traffic, revenue, backlinks or keyword rankings, and it does not prove that the winning site is better overall. It compares the technical and content signals each site actually serves.
What a comparison can and cannot show
It can show that a competitor serves compressed, cacheable responses, publishes clean structured data, fixes broken links or avoids duplicate titles while your site does not. Those are copyable advantages. It cannot show competitor keywords or backlinks, because that needs a licensed data set the tool does not have, so it does not invent them.
A page-count difference or a single strong check can swing the result, so read the per-check rows rather than only the score. The comparison is a starting point for a fix list, not a verdict. The findings it lists for the competitor come from their public pages, the same as yours.
Turn the comparison into a plan
Sort the table by the size of the difference and work through the checks where the other site leads. Each row is backed by the underlying findings, so you can see what failed and why. Fix your own site at the source, then run site audit on your domain to confirm the change across more pages.
Use site score to track your own number over time, and keyword gap or content gap when the question moves from technical signals to topics. The guide free website audit checklist gives an order for the work.
When to use related checks
Use this comparison when you want a like-for-like technical read of two sites. Use site audit for depth on your own site, since the comparison samples only a few pages. Use traffic at risk when you want to see which of your own pages carry problems rather than how you compare.
Competitor keyword and backlink data is not part of this tool. If you need a topic-level comparison, content gap and keyword gap cover that ground without claiming data the tool does not have.