Should You Block AI Crawlers? Understanding the llms.txt File for Your Website

The world of search is changing. People are now asking questions to AI like ChatGPT, Gemini, and seeing answers in Google's AI Overviews. These AI tools learn from the vast information on the internet, including your website. This raises a big question for Indian business owners: should you let these AI models use your valuable content? A new tool called llms.txt gives you control over this. This guide will explain exactly how to use llms.txt on my website to make the right choice for your business.

What are AI Crawlers and Why Should My Business Care?

You might be familiar with search engine bots like Googlebot, which visit your site to list it in search results. AI crawlers are different. Bots like Google-Extended and ChatGPT-User visit your website to collect data specifically to train Large Language Models (LLMs). These are the brains behind AI chat and search answers.

Why does this matter? Because your website's content—your expert articles, service descriptions, and company information—could be used by an AI to answer a potential customer's question. They might get the answer without ever visiting your site. This new reality is part of what we call Generative Engine Optimisation (GEO) or AI search optimisation. Understanding and managing it is becoming essential for staying visible online.

What is llms.txt? A Simple Explanation

Think of the 'robots.txt' file, which tells search engines which pages to ignore. The llms.txt file is a similar, new standard proposed for AI crawlers. It is a simple text file that you place on your website server.

Its job is to give instructions to AI crawlers, telling them what content they are allowed, or not allowed, to use for training their models. It is a direct way for you, the website owner, to set rules and control how your intellectual property is used in the new age of AI. While robots.txt manages visibility in search results, llms.txt manages your content's contribution to AI models.

How to Use llms.txt on My Website: A Step-by-Step Guide

Putting an llms.txt file on your website is a technical process, but the concept is straightforward. Here are the basic steps:

• Create the File: Using a plain text editor, create a new file and name it 'llms.txt'.
• Write the Rules: You need to specify the 'User-agent' (the AI crawler's name) and then state whether to 'Allow' or 'Disallow' access. For example:

To block all AI crawlers:
User-agent: *
Disallow: /

To block only ChatGPT's crawler:
User-agent: ChatGPT-User
Disallow: /

To allow all crawlers:
User-agent: *
Allow: /

• Upload the File: This file must be uploaded to the root directory of your website. The final address should be something like www.yourbusinessname.com/llms.txt.

If you are not comfortable with accessing your website's server, it is best to ask your web developer or our team for help. Our SEO services include technical assistance to ensure this is done correctly.

The Big Question: To Block or Not to Block?

This is the most important decision. There is no single right answer, as it depends on your business goals.

Reasons to ALLOW AI Crawlers:

• Become an Authority: By letting AI learn from your expert content, your business can be cited as a source in AI-generated answers. This builds brand authority and is key for AI Overview optimisation.
• Local Visibility: For a business in Delhi NCR, allowing access means AI can use your accurate location, opening hours, and service details to answer local queries, bringing you relevant customer attention.

Reasons to BLOCK AI Crawlers:

• Protect Your Content: If your business model relies on exclusive content, proprietary data, or unique research, you might not want an AI to learn it and give it away for free.
• Drive Website Traffic: If your goal is to make users visit your site to convert (e.g., fill a form, buy a product), you might want to prevent AI from summarising your content directly in its answers.

A middle path is often best. You can allow crawlers on your blog and service pages but block them from your premium resources section. A tailored strategy is key.

How to Use llms.txt on My Website as Part of a Bigger Strategy

Using llms.txt is just one piece of the puzzle. To truly succeed in the new AI-driven search landscape, you need a holistic approach.

• High-Quality Content: AI, like Google, prefers clear, helpful, and expert-written content. Focus on creating value for your customers.
• Technical SEO Foundation: Your website must be fast, secure, and mobile-friendly. These fundamentals are more important than ever.
• Schema Markup: Use structured data to label your content clearly. This helps both traditional search engines and AI understand exactly what your page is about, increasing the chances of being featured.
• Local SEO Excellence: Keep your Google Business Profile updated with precise information. AI tools often rely on this data for local recommendations.

Navigating this new territory can be complex. You can read more guides on our blog to stay informed or reach out to us to discuss a strategy that works for your specific business.

FAQs: How to use llms.txt on my website

Will blocking AI crawlers with llms.txt affect my Google ranking?

No. Currently, llms.txt is separate from robots.txt. Blocking an AI crawler like Google-Extended (for AI training) should not impact your ranking in traditional Google Search, which relies on Googlebot (for search indexing). The two files control access for different purposes.

Do I need both a robots.txt and an llms.txt file?

Yes, it is a good practice to have both. Use robots.txt to control how search engines index your site for traditional search results. Use llms.txt to control how AI models use your site's content for training purposes. They serve two different, important functions.

What is the cost to implement llms.txt and an AI SEO strategy?

The effort required depends entirely on your business goals, website size, and current digital presence. We create a customised plan for every business. We invite you to have a conversation with us, and we would be happy to prepare a free, no-obligation plan tailored to your needs.