Search Engines Directory & Bot Database
Browse 22 active Search Engines in our database. Get detailed profiles, copy robots.txt rules, and check if your URL is allowed or blocked by them.
Currently viewing 12 of 22 crawlers and bots
All Filter by safety to see specific recommendations for each category.
Applebot is the web crawler for Apple. It powers Siri and Spotlight suggestions, as well as Apple Intelligence features.
Applebot-Extended is a secondary user-agent used by Apple. It allows web publishers to control how their content is used...
AspiegelBot is a web crawler associated with Huawei's Petal Search ecosystem, operating primarily from Ireland.
Baiduspider is the official web crawler for Baidu, China's leading search engine. It is essential for having your websit...
Bingbot is the standard web crawler for Microsoft's Bing search engine. It allows your website to appear in Bing search ...
DuckDuckBot is the web crawler for DuckDuckGo. While DuckDuckGo largely sources results from Bing, this bot is used for ...
Googlebot is Google's primary web crawling bot. It discovers and indexes new and updated pages to be added to the Google...
Mojeek is an independent, privacy-focused search engine based in the UK. It builds its own index rather than relying on ...
The specific user-agent string for Mojeek's web crawler.
PetalBot is the web crawler for Petal Search, a search engine developed by Huawei. It is significant for reaching mobile...
A specialized crawler for Seznam.cz, the most popular search engine in the Czech Republic, used for checking homepage up...
Yahoo! Slurp is the crawler for Yahoo Search. Although Yahoo is now powered by Bing, Slurp is still active for certain Y...
Check URL for Search Engines
Verify if the crawlers currently in view are allowed or blocked on a specific URL.
⚠️ Caution: Advanced Configuration
Modifying your robots.txt file effectively controls who can
access your website. Incorrect rules can accidentally de-index
your entire site from Search Engines like Google. This tool
generates valid syntax rules based on your selection. It does
not analyze your specific website needs.
We strongly suggest testing any changes in Google Search Console or with CrawlerCheck before deploying to production.
Generated robots.txt snippet for the currently viewed bots 22
Select one of the options below to Disallow or Allow the bots.
Generating rules to BLOCK all bots currently in the list.
Review the list above. We recommend blocking bots marked as 'Unsafe' and carefully evaluating the bots marked as 'Caution'.
This is a live generated robots.txt based on the filters you selected above.
User-agent: applebot Disallow: / User-agent: applebot-extended Disallow: / User-agent: aspiegelbot Disallow: / User-agent: baiduspider Disallow: / User-agent: bingbot Disallow: / User-agent: duckduckbot Disallow: / User-agent: googlebot Disallow: / User-agent: mojeek Disallow: / User-agent: mojeekbot Disallow: / User-agent: petalbot Disallow: / User-agent: seznamhomepagecrawler Disallow: / User-agent: slurp Disallow: / User-agent: teoma Disallow: / User-agent: yahoo-blogs Disallow: / User-agent: yahoo-feedseeker Disallow: / User-agent: yahoo-mmcrawler Disallow: / User-agent: yahooseeker Disallow: / User-agent: yandex Disallow: / User-agent: yandexadditional Disallow: / User-agent: yandexadditionalbot Disallow: / User-agent: yandexbot Disallow: / User-agent: baidu Disallow: /
Copy and paste these rules into your website's robots.txt file to block the identified bots.
Resource & Impact Analysis
Managing bot traffic is about more than just security. It's about optimizing your infrastructure and protecting your digital assets. Unchecked crawler activity can have significant downstream effects on your website's performance and business metrics.
📉 Server Load & Bandwidth
Every request from a bot consumes CPU cycles, RAM, and bandwidth. Aggressive scrapers can simulate a DDoS attack, slowing down your site for real human users and increasing your hosting costs, especially on metered cloud platforms.
💰 Crawl Budget Waste
Search engines like Google assign a "Crawl Budget" to your site. A limit on how many pages they will crawl in a given timeframe. If low-value bots clog your server queues, Googlebot may reduce its crawl rate, delaying the indexing of your new content.
🤖 AI & Data Privacy
Modern AI bots (like GPTBot and CCBot) scrape your content to train Large Language Models. While not malicious, they use your intellectual property without providing traffic back. Blocking them allows you to opt-out of having your data used for AI training.
🕵️ Competitive Intelligence
Many "SEO Tools" and commercial scrapers are used by competitors to monitor your pricing, copy your content strategy, or analyze your site structure. Restricting these bots protects your business intelligence.
Understanding Web Crawlers & Bots
Web crawlers (also known as spiders or bots) are automated software programs that browse the internet. CrawlerCheck classifies them into distinct categories to help you decide which ones to allow and which to block.
Search Engines Bots
Bots like Googlebot and Bingbot are essential for your website's visibility. They index your content so it appears in search results. Blocking these will remove your site from search engines.
AI Data Scrapers
Bots like GPTBot (OpenAI), ClaudeBot (Anthropic) and PerplexityBot (PerplexityAI) crawl the web to collect data for training Large Language Models (LLMs). Blocking them prevents your content from being used to train AI, but does not affect your search rankings.
SEO Tools & Scrapers
Marketing tools like Ahrefs and Semrush scan your site to analyze backlinks and SEO health. While useful for SEO audits, aggressive scrapers can consume server bandwidth and impact performance.
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