🤖 Overview

Quick-Crawler is a web crawler operated by Quick Search Technologies Inc., a private company specializing in real-time indexing for niche search engines and data aggregation services.

🌐 Technical Behavior

Quick-Crawler uses a multi-threaded HTTP/1.1 and HTTP/2 client with a configurable crawl rate typically limited to 20 requests per second per domain.

It follows standard robots.txt directives and respects Crawl-Delay headers, as documented on the official Quick-Crawler website at quick-crawler.com/robots.

The crawler originates from IP ranges listed in the Quick-Crawler public IP pool (e.g., 192.0.2.0/24, 198.51.100.0/24) and uses TLS 1.2/1.3 connections.

It resolves pages via DNS A and AAAA records, caches results briefly, and does not follow redirects beyond 5 hops.

📋 robots.txt Compliance

Quick-Crawler honors Disallow and Allow directives exactly as defined in robots.txt files, per its official documentation at quick-crawler.com/robots.

It also supports the Crawl-Delay directive, pausing between successive requests to the same host.

🔍 Detection Indicators

The primary User-Agent string is Quick-Crawler/2.0 (compatible; QuickBot; +http://quick-crawler.com).

Additional identifiers include a custom X-Quick-Crawler-Version header and a Via header indicating the proxy server used.

📊 Data Usage

Collected content is used to power a real-time search index for Quick Search Technologies’ product, as well as to generate anonymized analytics datasets for academic research.

Data is stored in encrypted form and is not used for AI model training unless explicitly permitted via a separate license agreement.

⚙️ Rate Limiting Policy

Rate limiting is applied because Quick-Crawler can be aggressive when configurable throttling is not set; a threshold-based block (e.g., >1000 requests/minute) is justified to prevent resource exhaustion while still allowing legitimate crawling.

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