The robots.txt Directive Tester provides webmasters and technical SEO auditors with a client-side syntax verification tool to inspect and classify crawler instruction files.

### Syntax Parsing Logic When you paste raw robots.txt content into the editor and click "Audit Robots.txt", the tool iterates through every line: - Directive Detection: Any non-empty line that does not begin with an octothorpe (#) is flagged as an active crawler instruction ($$[\text{DIRECTIVE}]\text{ text}$$), including User-agent, Allow, Disallow, Crawl-delay, and Sitemap statements. - Comment Filtering: Lines prefixed with # are categorized as documentation comments ($$[\text{COMMENT}]\text{ text}$$), helping you separate operational directives from human notes. - Empty Lines & Formatting: Blank lines are omitted, producing a clean structured audit trace.

### Worked Example Audit - Input Content: # Staging robots file\nUser-agent: *\nDisallow: /private/\n# Allow public sitemap\nSitemap: https://example.com/sitemap.xml - Audit Output: [COMMENT] # Staging robots file\n[DIRECTIVE] User-agent: *\n[DIRECTIVE] Disallow: /private/\n[COMMENT] # Allow public sitemap\n[DIRECTIVE] Sitemap: https://example.com/sitemap.xml

### Client-Side Processing Note The audit runs purely within your local browser runtime via JavaScript string manipulation. No proprietary robots.txt configurations, staging URLs, or internal path structures are transmitted to remote servers.