🤖 Overview

OpenLinkProfiler is a web crawler operated by CognitiveSEO (part of the LinkResearchTools group), used to build the backlink index for OpenLinkProfiler.org. It systematically discovers hyperlinks across publicly accessible web pages to provide free backlink analysis and link profile data to website owners and SEO professionals.

🌐 Technical Behavior

The crawler performs discovery and re-crawl cycles, scanning pages for anchor texts, rel attributes, and destination URLs. It uses HTTP/1.1 and HTTPS, sending headers like Accept-Encoding: gzip and Connection: close. Official documentation (openlinkprofiler.org/crawler) states it limits requests to 1 per 2 seconds per domain. IP ranges are not publicly listed but originate from CognitiveSEO’s European and US hosting providers.

📋 robots.txt Compliance

OpenLinkProfiler fully honors robots.txt directives, including Disallow rules. It checks the file before each crawl and caches it for up to 24 hours, as documented on its official crawler page. Blocked paths are never accessed.

🔍 Detection Indicators

The primary User-Agent string is Mozilla/5.0 (compatible; OpenLinkProfiler/1.0; +https://www.openlinkprofiler.org/crawler). It also sends a From header with [email protected]. It requests robots.txt before each session and does not use other custom headers.

📊 Data Usage

Collected data is used exclusively for backlink indexing and link analysis on OpenLinkProfiler.org. The tool provides inbound links, anchor texts, and linking domains—data is not used for AI training or general search indexing.

⚙️ Rate Limiting Policy

Rate limiting is recommended because the crawler can burst multiple requests during initial discovery. Applying a threshold of 10 requests per second protects server stability while allowing legitimate backlink data collection, as documented by the operator.

ⓘ 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.