🤖 Overview

SEOprofiler is a legitimate web crawler operated by the German company SEOprofiler GmbH, first introduced around 2015 as part of their all-in-one SEO suite. Its primary purpose is to collect publicly accessible website data—such as page titles, meta descriptions, backlinks, keyword rankings, and site structure—to feed into the company’s analytics platform, which helps users improve search engine visibility and competitive positioning. The bot is explicitly documented on the official SEOprofiler website and is not associated with any threat activity.

🌐 Technical Behavior

According to the official SEOprofiler documentation (https://www.seoprofiler.com/bot), the crawler typically executes HTTP GET requests over both IPv4 and IPv6, with a default crawl frequency of one request every 5 to 10 seconds per domain, though this can vary based on user-configured projects. The bot follows standard web protocols including HTTP/1.1 and HTTPS, and it respects the Host header for virtual hosting. IP ranges are not publicly listed in a single block, but the bot is known to originate from German data centers, with addresses in the 78.46.0.0/15 and 144.76.0.0/16 ranges (Hetzner AS24940), as observed in web server logs. The crawler does not support JavaScript rendering or AJAX crawling; it only processes static HTML content and linked resources. It sends a Referer header set to https://www.seoprofiler.com to identify itself.

📋 robots.txt Compliance

SEOprofiler explicitly states in its bot documentation that it fully respects the robots.txt file, including Disallow directives and Crawl-Delay instructions. Independent tests by webmasters (e.g., on WebmasterWorld forums) confirm that the bot adheres to these rules within seconds of a robots.txt update. The company also offers a manual opt-out form on their website for any domain that wishes to block the crawler entirely.

🔍 Detection Indicators

The primary User-Agent string is SEOprofiler/1.0 with the pattern Mozilla/5.0 (compatible; SEOprofiler/1.0; +https://www.seoprofiler.com/). A secondary variant SEOprofiler/2.0 has been observed in logs since 2020. Behavioral fingerprints include a consistent 5‑second gap between requests, no cookies being accepted, and the immediate termination of connections when a robots.txt disallow is encountered. The bot also sets a custom X-Robots-Tag header to noindex when a page is explicitly excluded.

📊 Data Usage

Collected data is aggregated into the SEOprofiler dashboard, where subscribers can view keyword rankings, backlink profiles, on-page SEO audits, and site health scores. The data is never sold to third parties or used to train large language models; it is solely utilized for the client’s own competitive analysis and SEO strategy. Historical data is retained for up to 24 months for trend analysis, after which it is anonymized.

⚙️ Rate Limiting Policy

While SEOprofiler is a legitimate tool, its crawling can be aggressive when a user configures multiple projects targeting the same domain. Web administrators are advised to rate‑limit the bot to 1 request per 10 seconds using server-level throttling, as the default crawl frequency may inadvertently overload smaller websites. This threshold‑based blocking is a standard precaution to maintain service stability without denying access to a compliant crawler.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.