What is SEOlizer?
SEOlizer is an SEO crawler operated by SEOLizer. Agent Analytics can track when it visits your website.
Overview
| Operated By | SEOLizer |
| Expected To Follow Robots.txt | Yes |
| Insights Last Updated | July 9, 2026 |
Category
Expected Behavior
SEOlizer maps sites the way its customers' SEO tools need, following internal links to build a full picture of structure, content, and ranking signals. Expect thorough crawls rather than spot checks, with frequency rising when your site or your competitors are actively monitored in its tools.
SEOlizer's User Agent
| User Agent | SEOlizer/1.2 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13 (+https://www.seolizer.de/bot.html) |
How To Block SEOlizer With Robots.txt
Add this rule to your robots.txt file to block SEOlizer from accessing your entire website, or use Automatic Robots.txt to block all SEO crawlers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: SEOlizer # https://knownagents.com/agents/seolizer
Disallow: /SEOlizer Global Insights
As of July 9, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
0% of top websites block SEOlizer in their robots.txt files.
Overall SEO Crawler Traffic
2.5% of all web traffic came from SEO crawlers.
Frequently Asked Questions
Should I Block SEOlizer?
Only if you want your own pages and outbound links out of those tools. SEOlizer collects the ranking and backlink data behind SEO tools, likely including ones you or your agency use, and it does not change how search engines rank you. Blocking it will not hide your backlink profile either, because backlinks are discovered on the sites that link to you. Almost none of the top websites we track have robots.txt rules for SEOlizer right now.
Does SEOlizer Respect Robots.txt?
Yes. SEOlizer is expected to honor robots.txt rules, so a disallow rule is the right first move. Automatic Robots.txt adds and maintains that rule for you, and Agent Analytics confirms SEOlizer actually honors it.
Does SEOlizer Access Private Content?
Login walls stop it. SEOlizer analyzes public pages for rankings, links, and site structure.
Why Is SEOlizer Visiting My Website?
Your domain shows up in the ranking, backlink, and competitor data SEOlizer's operator sells. If anyone tracks your site or your competitors in an SEO tool, SEOlizer visits you.
How Can I Tell if SEOlizer Is Visiting My Website?
Agent Analytics tracks SEOlizer visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "SEOlizer". Look for full site crawls that follow your internal links. Keep in mind that SEOlizer doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.