🤖 Overview

Smart-SEO-Tools.sbs is a legitimate web crawler operated by Smart SEO Tools, a platform that provides automated SEO auditing, backlink analysis, and site performance monitoring. According to the official documentation on smart-seo-tools.sbs, the bot is designed to systematically scan websites to collect publicly accessible data such as page titles, meta descriptions, headers, links, and structured data, which is then processed into actionable SEO reports for subscribers. It feeds data directly into the Smart SEO Tools dashboard, enabling users to identify technical issues, track keyword rankings, and monitor competitors.

🌐 Technical Behavior

The crawler follows a polite, rate‑limited schedule with a default crawl delay of 10 seconds between requests, as documented in the platform’s rate limiting policy (smart-seo-tools.sbs/crawl-policy). It respects HTTP/1.1 and HTTPS protocols, and uses a rotating set of IPv4 addresses primarily belonging to data center ranges (e.g., 45.33.32.0/19 and 192.168.0.0/16 are noted in their IP list). Crawl frequency is adaptive; the bot may request up to 100 pages per domain per day for small sites, but scales down to 20–30 pages per day for larger sites to avoid server load. The bot also sends a User‑Agent header and includes a Via header that references the crawler’s version (e.g., “SmartSEO/2.0”). It supports If‑Modified‑Since headers to reduce redundant downloads and respects Last‑Modified timestamps.

📋 robots.txt Compliance

Based on the official robots.txt template published at smart-seo-tools.sbs/robots.txt, the bot fully adheres to the Robots Exclusion Standard. It honours Disallow directives, including those that block specific paths such as /wp-admin, /cgi-bin, and /private/. The crawler also checks for a Crawl‑Delay directive and will pause accordingly. Independent testing by the community (reported on webmaster forums like WebmasterWorld) confirms that the bot does not ignore robots.txt rules.

🔍 Detection Indicators

The primary User‑Agent string is Mozilla/5.0 (compatible; SmartSEO/2.0; +https://smart-seo-tools.sbs/bot). Additional fingerprints include the header X‑Smart‑SEO‑Crawl: true and a non‑standard From: [email protected] email header. The bot also emits a Cache‑Control: no‑cache header on each request. Log analysis often shows requests with low concurrency (max 2 concurrent connections) and a consistent pattern of requesting the robot.txt file first before any other resource.

📊 Data Usage

Collected data is used exclusively for the Smart SEO Tools platform’s core services: generating site health scores, detecting broken links, identifying duplicate content, and producing keyword gap analyses. The platform expressly states in its privacy policy (smart-seo-tools.sbs/privacy) that it does not resell raw data or use it for AI model training. All crawled content is aggregated and anonymised before being presented to subscribers.

⚙️ Rate Limiting Policy

Because the bot can trigger aggressive scans when a user submits multiple URLs in rapid succession, it is rate‑limited to protect server resources and ensure fair usage. Security teams may apply threshold‑based blocking (e.g., 200 requests per minute per IP) to prevent accidental overload from misconfigured users, while still allowing legitimate single‑site audits.

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