Free and Pro include the same core crawling, rendered-page analysis and result-inspection features. Pro adds faster crawling, saved reports, Internal Links CSV export and URL-list import.
| Feature | Free | Pro |
|---|---|---|
| Configurable crawl URL limit, including pages and assets | Up to 1,000,000 | Up to 1,000,000 |
| In-app browser | Yes | Yes |
| Google search or direct URL entry | Yes | Yes |
| Recent crawl history suggestions | Yes | Yes |
| Page analysis sidebar | Yes | Yes |
| Rendered DOM extraction | Yes | Yes |
| Same-host website crawling | Yes | Yes |
| Crawl window | Yes | Yes |
| Internal Links results table | Yes | Yes |
| External Links results table | Yes | Yes |
| External header checks | Yes | Yes |
| URL details drawer | Yes | Yes |
| Overview, Inlinks, Outlinks, Resources, Redirects and Headers details | Yes | Yes |
| Filter results | Yes | Yes |
| Sort results | Yes | Yes |
| Resize table columns | Yes | Yes |
| Persistent internal column visibility | Yes | Yes |
| Export Internal Links results as CSV | No | Yes |
| Save crawl reports | No | Yes |
| Open saved crawl reports | No | Yes |
| Import a list of URLs | No | Yes |
| Custom crawler User Agent | Yes | Yes |
| Local SQLite crawl storage | Yes | Yes |
| Local SQLite crawl history | Yes | Yes |
| Help menu legal documents | Yes | Yes |
| Gentle crawl speed | Yes, 1 concurrent crawler | Yes, 1 concurrent crawler |
| Balanced crawl speed | No | Yes, 6 concurrent crawlers |
| Fast crawl speed | No | Yes, 12 concurrent crawlers |
| Product name | SEO Web Spider | SEO Web Spider Pro |
| Registration key required | No | Yes |
The concurrency limit is shared between pages and assets. Actual crawl capacity depends on your computer and the website. External-link header checks are optional and run after the crawl stops or finishes.
Which Version Should I Use?
Use Free when:
- you are testing a small site;
- you want a cautious first crawl;
- one crawler at a time is sufficient;
- you are learning the app.
Use Pro when:
- you crawl larger sites regularly;
- you have permission to crawl at a higher request rate;
- you want Balanced or Fast mode;
- you need to save and reopen crawl reports;
- you want to export Internal Links results to CSV;
- you need to import a list of URLs;
- you need to reduce crawl time on sites that can safely handle more requests.
Notes About Adverts
The free app is funded through adverts and product messages. The application can display London Web Factory managed messages in the splash screen and status bar. Pro unlocks the speed and reporting features listed above. Registering does not necessarily remove every advertising or message surface; availability can vary by release.
For the current offer, see the Free and Pro product comparison.