A desktop website crawler used by technical SEO specialists to audit broken links, duplicate titles, missing meta tags, and redirect loops.
Screaming Frog SEO Spider is a website crawler used to inspect technical and on-page information. A crawl collects evidence from the URLs it reaches under its configured rules. That makes it useful for finding patterns across many pages, but it does not mean the crawl has reproduced everything a search engine knows about the site.
Configuration determines coverage. Starting URLs, exclusions, rendering choices and access conditions can affect what is discovered and recorded. A page absent from a crawl may be unreachable by the chosen link paths or excluded by a setting rather than nonexistent. Record the setup before comparing results from two runs.
The reports need interpretation. A repeated title could indicate a template problem, while an intentionally similar label may require a different decision. A failed request might be temporary or restricted to the crawler. Validate representative examples and identify the affected template or workflow before applying changes across the site.
Takeaway: Use a crawler to turn scattered technical observations into an inspectable inventory. Prioritize confirmed problems that obstruct useful pages or customer journeys instead of trying to eliminate every warning indiscriminately.
Example
A retailer crawls its catalog and finds that links from several category pages reach retired products. It checks the actual destinations, decides which products have genuine replacements and updates the relevant links. It does not redirect every missing product to the homepage just to improve a report score.
What to check
Crawl only within authorized scope and use settings appropriate to the site’s capacity. Preserve the configuration and export, then repeat a comparable check after fixes to establish what changed.
For more detail, see Screaming Frog SEO Spider.