← Comparisons · updated 2026-10-04
MarsGeo vs Screaming Frog: which should you use?
Screaming Frog is a powerful desktop crawler for auditing whole sites. MarsGeo is a set of free, browser-based tools for generating and checking individual pages. They solve different problems, and many people use both.
| Feature | MarsGeo | Screaming Frog |
|---|---|---|
| Price | Free (Pro from $29/mo) | Free up to 500 URLs, then a yearly licence |
| Setup | Open a page — no install | Download and install a desktop app |
| Runs in | Your browser | Your desktop (Java) |
| Schema generators | Yes — 20+ types | No (it audits, does not generate) |
| robots.txt / sitemap | Yes | Audits, does not generate |
| Whole-site crawl | No | Yes — the core strength |
| Backlink data | No | No (not a backlink tool) |
Where MarsGeo wins
- Quick, repeatable generation of schema, robots.txt and sitemaps
- Zero install and no signup for the free tools
- Using it from any device, including a phone
- Localised tools for international teams
Where Screaming Frog wins
- Crawling an entire site and finding issues at scale
- Comparing crawls over time and exporting large reports
- Advanced technical auditing (redirects, JS rendering, integrations)
Verdict
If you need to crawl a whole site, use Screaming Frog. If you need to generate or check a page's schema, robots.txt or meta tags quickly and for free, MarsGeo is faster. Most technical SEOs keep both in the toolkit.
Features and pricing change — check Screaming Frog's site for current details.