Visually create robots.txt files with search engine templates and crawler rules
Features
- Multiple User-Agents: Configure rules for different crawlers
- Rule Templates: Pre-built templates for common scenarios
- Syntax Validation: Validate robots.txt syntax
- Preview & Export: Preview and download robots.txt
Usage Guide
- Select Template: Choose a preset template matching your site type or start with Allow All template
- Configure Rules: Add crawler rules, specify User-agents and paths to allow or block
- Add Sitemaps: Add your sitemap URLs to help search engines discover your content
- Export File: Preview the generated content, then copy or download robots.txt file
Technical Details
Robots Exclusion Protocol
Robots.txt follows the Robots Exclusion Protocol (REP), a standard developed in 1994 to provide website owners with a way to communicate with web crawlers. The file must be placed in the root directory and named exactly 'robots.txt'. It uses a simple syntax with directives like User-agent, Disallow, Allow, Sitemap, and Crawl-delay to control crawler behavior.
User-Agent Directive
The User-agent directive specifies which crawler the rules apply to. Using '*' applies rules to all crawlers. You can target specific crawlers like Googlebot, Bingbot, or Baiduspider. Each User-agent section can have multiple Allow and Disallow directives to define accessible and blocked paths.
Allow and Disallow Rules
Disallow directive specifies paths that crawlers should not access, while Allow directive (not supported by all crawlers) permits access to specific paths within a disallowed area. Paths are case-sensitive and support wildcards (*) and end-of-path matching ($). For example, Disallow: /*.pdf$ blocks all PDF files.
Frequently Asked Questions
- What is robots.txt file?
- robots.txt is a file that tells search engine crawlers (bots) which parts of your website they can crawl. Location: Site root (e.g., example.com/robots.txt). Format: Plain text, line-by-line directives. Key directives: User-agent (specify bot), Disallow (block paths), Allow (permit paths), Sitemap (sitemap URL), Crawl-delay (crawl interval). Purpose: Control crawler traffic, Hide sensitive pages (admin, private), Prevent duplicate content, Reduce server load. Note: Not a security mechanism, just guidelines.
- How does robots.txt help SEO?
- robots.txt improves SEO by: Crawl budget optimization (prioritize important pages), Duplicate content prevention (block low-value pages), Reduced page load (prevent unnecessary crawls), Sitemap submission (faster indexing), Admin page hiding (login, search results). Best practices: Don't block important content, Allow CSS/JS (rendering), Test syntax (Google Search Console), Include sitemap. Proper robots.txt improves crawl efficiency by 30-50%.
- Difference between Disallow and Allow?
- Disallow: Specifies paths crawlers should NOT access. Examples: Disallow: /admin/ (block admin pages), Disallow: /private/ (block private folder), Disallow: /*.pdf$ (block all PDFs). Allow: Creates exceptions to Disallow rules. Example: Disallow: /private/, Allow: /private/public/ (allow subfolder). Priority: More specific rules win. Wildcards: * (any characters), $ (end of line). Recommendation: Only block what's needed, avoid over-blocking.
- Do all crawlers respect robots.txt?
- No, not all crawlers respect it. Respectful bots: Google, Bing, Yahoo (major search engines), Ethical crawlers (commercial bots). May ignore: Malicious scrapers (ignore), Spam bots (ignore directives), Hackers (don't read robots.txt). robots.txt is: Courtesy protocol (not enforced), Publicly readable (anyone can see), Not security (use authentication). Real protection: Authentication (require login), Firewall (block IPs), Rate limiting (prevent abuse).
- How to test robots.txt?
- Testing methods: 1) Syntax check: Use online validators, Check typos (Disallow, User-agent). 2) Google Search Console: robots.txt tester tool, Check if URLs blocked. 3) Browser test: Visit yoursite.com/robots.txt, Verify displays correctly. 4) Crawler simulation: Test with different user-agents, Verify rules work. 5) Log monitoring: Track crawler access, Verify behaving as expected. Tools: Google Search Console, Bing Webmaster Tools, robots.txt validators.
Related Documentation
- Robots.txt Feature 1 - Generate robots.txt file - detail 1
- Robots.txt Feature 2 - Generate robots.txt file - detail 2
- Robots.txt Feature 3 - Generate robots.txt file - detail 3
- Robots.txt Feature 4 - Generate robots.txt file - detail 4
- Robots.txt Feature 5 - Generate robots.txt file - detail 5