Guides
What Is llms.txt and Should Your Site Have One?
A practical DomainLens guide to What Is llms.txt and Should Your Site Have One?, focused on AI crawlers, content discovery, file format, robots.txt overlap.
Run a fresh DomainLens audit and use the report as your priority list.
Overview
What Is llms.txt and Should Your Site Have One? is useful when you need a clear way to separate cosmetic SEO work from issues that can block crawling, indexing, rankings, or search snippets. Start with evidence, then decide what deserves engineering time.
Use an automated audit to collect the baseline, then review the page manually for context, search intent, and business priority.
Why it matters
The most common problems usually sit around AI crawlers, content discovery, file format, robots.txt overlap. These signals influence how easily search engines discover pages, understand content, and trust the final URL they should rank.
A good SEO workflow turns these checks into a short fix list with owner, impact, effort, and validation steps.
What to check
- Review AI crawlers and record the current state, expected state, and exact URL affected.
- Review content discovery and record the current state, expected state, and exact URL affected.
- Review file format and record the current state, expected state, and exact URL affected.
- Review robots.txt overlap and record the current state, expected state, and exact URL affected.
Common mistakes
- Fixing AI crawlers without validating the rendered page, canonical target, and indexability after deployment.
- Fixing content discovery without validating the rendered page, canonical target, and indexability after deployment.
- Fixing file format without validating the rendered page, canonical target, and indexability after deployment.
- Fixing robots.txt overlap without validating the rendered page, canonical target, and indexability after deployment.
Next step
Run a fresh DomainLens audit, compare the report with this guide, and prioritize fixes that affect indexability, snippets, internal linking, or Core Web Vitals first.