Google May Expand Unsupported Robots.txt Rules List
Google may soon update its robots.txt documentation by expanding the list of unsupported rules based on real-world website data. This update was discussed by Gary Illyes and Martin Splitt on Google’s Search Off the Record podcast, where they explained how the team is analysing commonly used but unsupported directives found across websites.
Currently, Google officially supports only four robots.txt fields: user-agent, allow, disallow, and sitemap. Any other directives are ignored by Googlebot. However, many websites still include unsupported rules, often without realising they have no SEO value.
To improve clarity, Google used data from HTTP Archive and BigQuery to study millions of robots.txt files and identify the top 10 to 15 most-used unsupported tags. Instead of adding just two suggested tags from a community pull request, Google decided to build a stronger baseline using real usage data.
The research also revealed common misspellings of important directives, like 'disallow'. Google may improve typo tolerance so that some frequent mistakes are still understood correctly by crawlers.
This update matters because Search Console already reports unrecognised robots.txt tags, and clearer documentation will help website owners fix unnecessary or ineffective directives. Businesses and website managers should review their robots.txt files to ensure only supported rules are used for better crawling and indexing performance.
For students learning technical SEO and website optimisation, understanding robots.txt behaviour is essential. At D Academy, a leading digital marketing institution in Calicut, learners gain practical knowledge of search engine crawling, indexing, and advanced SEO strategies. As a trusted digital marketing academy in Calicut, D Academy offers hands-on training through its industry-focused digital marketing course in Calicut, helping students stay updated with the latest Google algorithm changes and technical SEO best practices.
Learn more at D Academy and explore how modern SEO training can improve your digital marketing career.
Comments
Post a Comment