Seolyzer
French crawler with real-time log analysis, hosted in France and built for large sites
Quick Overview
| Company | Seolyzer SAS |
|---|---|
| Category | SEO Crawler and Site Audit Tools |
| Headquarters | Choisy-le-Roi, France |
| Founded | Not stated |
| EU Presence | Yes - France (EU) |
| Data Location | France (vendor statement) |
| Open Source | No |
| GDPR Compliant | Yes |
| Self-Hosting | No |
| Main Features | SEO crawler up to 50 million URLs, real-time log analysis, crawl-log-GSC cross analysis, crawl comparison, internal PageRank, orphan page detection, custom scraper, API, unlimited users |
| Pricing | Pricing on request (demo booking) |
| Best For | Large French and European sites that care about crawl budget |
| Replaces | Botify, Oncrawl, Screaming Frog log file analyser |
Detailed Review
Seolyzer is published by Seolyzer SAS, a company with its address in Choisy-le-Roi near Paris. Its legal notice says data is secured and hosted in France and that no personal data from logs is stored, and the site runs on OVH infrastructure.
The product is organised into four blocks: a crawler, log analysis, cross analysis that fuses the first two with Google Search Console, and an API. The website is available in English and French.
Crawl size and speed
The crawler page says a crawl can reach 50 million URLs at 1,000 URLs per second and that a crawl can be run once or recurringly. Crawl speed, depth, subdomains and a virtual robots.txt test can be configured before launching.
Included reports cover indexability, HTTP codes, titles and metas, depth, response time, orphan pages, sitemap checks, internal PageRank, word counts and a custom scraper.
Logs in real time
The FAQ makes an argument for live logs: Search Console data arrives with at least a three-day delay, so a spike of 404 or 500 errors has done its damage by the time it appears. Seolyzer reads logs as they arrive and categorises pages by type to show which sections Googlebot favours.
No personal data from logs is stored, according to the legal notice.
Everything bundled
All offers include crawl comparison, log analysis, cross analysis and the API, and users and shares are unlimited, so clients and developers can be given view access to an analysis.
Price is not published; the site routes to a demo booking.
Limitations to Consider
No prices are published, so budgeting needs a demo call. The site shows no information on retention periods, uptime commitments or certifications. The site is offered in English and French only. For published pricing, JetOctopus lists its plans openly.
Who Should Use Seolyzer
Sites with crawl-budget questions that prefer French hosting and want logs and crawls analysed together.
Pros and Cons
Pros
- Real-time log analysis
- Crawls up to 50 million URLs
- Data hosted in France
- Unlimited users and shares
- Crawl, log and Search Console data in one analysis
Cons
- No published pricing
- Interface in English and French only
- Few details on retention or certifications
- Smaller vendor than the enterprise suites
Alternatives to Seolyzer
Other European seo crawler and site audit tools worth comparing before you decide:
Audisto
Germany · Cloud crawler from Gernsbach with unlimited crawls and hourly monitoring
Sitebulb
United Kingdom · Visual desktop auditor that ranks every issue by priority
JetOctopus
Estonia · Crawler, bot logs, Search Console and GA4 in one workspace
Screaming Frog
United Kingdom · SEO Spider for Windows, Mac and Linux, free to 500 URLs
See all European seo crawler and site audit tools or compare them directly against Botify on our alternatives page.
Frequently Asked Questions
The legal notice says data is secured and hosted in France and not passed to third parties, and that no personal data from logs is stored.
The crawler page states crawls of up to 50 million URLs at a speed of 1,000 URLs per second.
No. The site offers a demo booking and does not publish plan prices.