You probably already know about robots.txt (for Google) and sitemap.xml (for search engines).
But there's a new file every website should have in 2025:
👉 llms.txt
Here's why it matters:
When someone asks ChatGPT, Claude, or Perplexity about your business, the AI crawls your website but it sees everything: cookie banners, navigation menus, JavaScript, ads, and all the noise in between.
The result? Incomplete or wrong information about your business.
A llms.txt file fixes that.
✅ What your business does
✅ Which pages exist and what they contain
✅ How to contact you
Think of it as a "cheat sheet" for AI so when someone asks an AI assistant about your niche, your business gets mentioned correctly.
How to create one:
1. Open a text file
2. Write a short description of your business
3. List your main pages with URLs
4. Add your contact details
5. Upload it to your website root as llms.txt
That's it. 15 minutes of work. Massive upside as AI search keeps growing.