Any website owner would love their site to rank better on search engines, and so the whole process of getting discovered and crawled by search engines like Google or Bing must be optimized. One less talked-about but very effective SEO technique is to place a sitemap in robots.txt file.
We will talk about why such a tiny sliver of an action can have such a large SEO impact, how to implement it correctly, and how it fits into your bigger crawl optimization scheme.
What is a Sitemap.xml?
A sitemap.xml is an XML document holding a list of important URLs on your site. It tells search engines like Google, Bing, and Yahoo about the internal structure of your site. It is a part of website's technical SEO factor that helps in crawling and indexing of your website pages. It helps to locate:
- All your live and indexable pages
- Frequency of content updates
- Priority of pages on your site
Figure: Example of an XML sitemap
Think of a sitemap as a map of your website in a way that is especially for search engines.
What is robots.txt?
The robots.txt file is simply a text file that lives in your root directory of your domain (for instance, yourdomain.com/robots.txt). The only function of this file is to advise web crawlers (bots) that:
- Which parts of your site should be crawled
- Which parts to avoid
- Where your sitemap is (if specified)
Figure: Example of robots.txt file
When bots come to visit your website, they usually start with the robots.txt file. If the robots.txt file contains a reference to your sitemap, they will be able to crawl your pages more efficiently.
Why Should You Add a Sitemap in robots.txt?
Placing your sitemap in the robots.txt file is a simple but intelligent SEO move. While most website owners submit their sitemap solely through tools like Google Search Console, placing it directly in the robots.txt can enhance your site's visibility, crawling efficiency, and index rate.
Here's a summary of why it matters:
Figure: Reasons to add XML sitemap in robots.txt file for better SEO
1. It helps search engines find your sitemap automatically
The robots.txt file is very often the first file that a search engine crawler will read if your website is being crawled by one. By putting the sitemap URL in your robots.txt file, you are allowing the crawlers to obtain the sitemap with ease, even if it was not submitted through any other way.
This can be useful especially for:
- New sites not yet indexed in Google Search Console.
- Third-party crawlers (such as Ahrefs, Semrush, or Bing) that scrape sites for data.
- Avoid spasmodic discoverability if metrics, such as Search Console, are behind or failing.
Tip: While submitting your sitemap elsewhere, inclusion in robots.txt is a fall-back and improves visibility in general.
2. Improves Crawl Efficiency
Search engines operate with limited crawl budgets. Crawl budget is the amount of time and resources they allocate to crawling your site. By pointing search engine bots directly to your sitemap:
- Bots don’t have to guess which URLs to crawl.
- You help them prioritize their most important, indexable pages.
- You reduce the possibility of major content being left out, especially on big or dynamically generated sites.
This results in less wasted crawl time and better coverage of your site structure.
3. Faster Indexing of New and Updated Content
Sitemaps can be set up to tell search engines what each URL's last modified date is. If this data is provided through a sitemap indicated in robots.txt:
- Bots can quickly identify which content has been recently updated.
- New pages, products, or blog posts are crawled quickly.
This is particularly helpful for:
- News websites
- High update frequency e-commerce sites
- SEO content producers
Including your sitemap in robots.txt ensures timely and quicker crawling of new or time-sensitive content.
4. Acts as a Redundant Route to Sitemap Discovery
While submitting your sitemap directly to Google Search Console, Bing Webmaster Tools, or other platforms is a common practice in SEO, but adding your sitemap to robots.txt ensures:
- If one of the submission options fails, bots have another option.
- You increase opportunities for every search engine (not just Google) to find your sitemap.
- You don't have a single point of submission failure, and bots have multiple ways through which they can find your content.
Remember: Not all bots read or use Search Console, but most of them check robots.txt.
5. Technical SEO Best Practice
Having the sitemap in your robots.txt is a best practice recommended by SEO experts and even Google itself. Why?
- It takes less than a minute to do.
- It places no additional server load.
- It has no JavaScript or dynamic configuration.
- It plays seamlessly with any content management system (Shopify, WordPress, Wix, etc.).
For web pages that aim to follow SEO technical hygiene, this is a low-effort, high-value task that results in improved search visibility and site health.
How to Add Sitemap in robots.txt file (Step-by-Step Guide)
Let’s walk through the complete process of adding a sitemap in the robots.txt file, from locating your sitemap to updating your robots.txt file.
Step 1: Locate Your Sitemap URL
Most of the websites automatically generate sitemaps. You can try visiting one of these common paths to check if your website has a sitemap or not.
- https://yourdomain.com/sitemap.xml
- https://yourdomain.com/sitemap_index.xml (for WordPress + Yoast)
If your website is using a CMS or an SEO plugin,
- WordPress (Yoast, Rank Math): Navigate to SEO plugin settings > Features > XML Sitemaps.
- Shopify: Automatically generated at yourdomain.com/sitemap.xml
- Wix or Squarespace: Usually located at yourdomain.com/sitemap.xml
Still unsure? You can:
- Check Google Search Console > Sitemaps
- Use online tools like XML Sitemap Finder
Note: You can also generate a sitemap using Screaming Frog or free sitemap generator tools.
Step 2: Locate or Create Your robots.txt File
Check if your website already has a robots.txt file or not:
To check the robots.txt file, go to: https://yourdomain.com/robots.txt
- If it loads, then your website already has a robots.txt file.
- If it shows a 404 error or a blank page, then you may need to create one.
Where is robots.txt located?
- In your root directory (main folder of your website’s hosting server)
- In WordPress: Use plugins like Yoast SEO, All in One SEO, or file managers like FileZilla or cPanel
How to access robots.txt using cPanel or File Manager
If you're managing your own website through a web host like Hostinger, Bluehost, cPanel, etc, then you can use this method to find and update your robots.txt file.
- Log in to your hosting account.
- Go to cPanel or open the File Manager.
- Navigate to the public_html or www folder, which is the root directory.
- Look for a file named robots.txt.
- If it exists, you can click Edit to view or modify it.
- If not, you can create a new file:
- Click "+ File" or "Create New File"
- Name it robots.txt
- Paste your sitemap or directives
- Save and close
For WordPress Users (Using Plugins)
- Install & activate an SEO plugin like Yoast SEO or Rank Math.
- Go to:
- For Yoast: SEO > Tools > File Editor
- For Rank Math: General Settings > Edit robots.txt
- You can view, edit, or create the robots.txt file directly from your dashboard.
Step 3: Add Sitemap URL to the robots.txt file
Use the following format (make sure the URL is full and correct):
User-agent: *
Disallow:
Sitemap: https://yourwebsite.com/sitemap.xml
Figure: Location of XML sitemap in robots.txt file
Note:
- Place the sitemap URL outside of any User-agent blocks.
- Use HTTPS if your site is secure.
- Add it at the bottom of the file.
Step 4: Test Your robots.txt File
After adding or editing the file:
- Visit: https://www.yourdomain.com/robots.txt, if the page opens with text similar to above, then you have successfully added your sitemap in robots.txt file.
- Use the robots.txt Tester in Google Search Console to check for syntax or blocking issues.
Best Practices for Using robots.txt and Sitemap Together
1. Do Not Block Important Pages
Do not block important directories or pages like /blog/ or /product/ unless you are very sure you want them blocked. This can hold back Google from crawling pages already listed in your sitemap.
2. Keep Your robots.txt File Simple
Do not complicate your file with rules it will never need. Too many rules often confuse bots-or lead to errors. Just keep it simple and clean.
3. Submit Your Sitemap to Search Console Too
Even when you include your sitemap in robots.txt, always submit it directly in Bing Webmaster Tools and Google Search Console. This gives you the ability to see crawl reports and diagnostics for errors.
Common Mistakes to Avoid in Robots.txt
1. Incorrect sitemap URL format
Always use the full URL, starting with https://. Relative paths won't work.
2. Including Sitemap Directive Within User-agent Block
This is wrong:
User-agent: *
Sitemap: https://www.yourwebsite.com/sitemap.xml
It should be outside of all User-agent groups.
Not Using HTTPS on Secure Sites
If your website uses HTTPS, don't list your sitemap using HTTP; it might not get fetched properly.
Conclusion
Adding a sitemap to robots.txt is a simple but very valuable SEO best practice. It helps search engines discover your content faster, improves crawling efficiency, and complements your work in search engine tools like Google Search Console.
If you haven't yet, go into your robots.txt file and add your sitemap URL. It's quick, easy, and a complete must for any site that cares about SEO.
And if you don't want to handle technical aspects of your website, we provide you with on-page SEO to technical SEO services for your website. Also, we handle all the SEO optimization works so that you can focus on your business operation needs. With our proven team of SEO experts, we help you grow your business online.
Frequently Asked Questions (FAQs):
1. What do we mean by an XML sitemap?
An XML sitemap is a file containing a structured listing of all important pages of a website. The XML sitemaps allow search engine crawlers to effectively discover the pages on your site so they can be properly indexed; in return, it benefits SEO since it does not allow the search engines to miss crawling any key pages.
2. Is robots.txt good for SEO?
Yes, robots.txt provides guidelines to search engines as to which pages are to be crawled and which are not. When used properly, it prevents the indexing of duplicate or unwanted pages, conserves the crawl budget, and consequently contributes towards enhancing SEO, mainly by sustaining search engines focused on the most important contents of the site.
3. How to generate an XML sitemap?
You can generate an XML sitemap from online sitemap generator tools like Screaming Frog, SEO plugins such as Yoast for WordPress, or website builders that generate sitemaps automatically. After generating it, your need to upload the sitemap.xml to the root folder of your website to make it accessible by search engines.
4. Would robots.txt require a sitemap?
Yes, it is recommended to add a sitemap URL within robots.txt. It helps search engines by permitting easy discovery of your sitemaps, hence enhancing their crawling capabilities and ensuing in quicker indexing of your site's pages.
5. How to find a sitemap?
You can check common URLs like yourdomain.com/sitemap.xml. Alternatively, find it via your CMS or SEO plugin settings, or view the “Sitemaps” section in Google Search Console where your sitemap is usually submitted.
6. Is a robots.txt necessary?
It is not mandatory to add robots.txt file in website, but its highly recommended. Robots.txt controls which pages search engines crawl or block, helping to prevent indexing of duplicate or sensitive content and improving your site’s SEO by managing crawl budget effectively.
7. How to add sitemap to robots.txt file?
To add your sitemap to the robots.txt file, follow these simple steps:
- Locate your sitemap URL
- Access your website’s root directory
- Find or create the robots.txt file
- Open the robots.txt file for editing
- Add your sitemap
- Save and upload the file
- Test the robots.txt file