A `sitemap.xml` is an XML file that helps search engines understand the structure of a website. It provides information about the pages, videos, and other files on the site, as well as the relationships between them.
Here’s a basic structure of a `sitemap.xml` file:
```xml
https://www.example.com/
2023-10-01
weekly
1.0
https://www.example.com/about
2023-09-15
monthly
0.8
https://www.example.com/contact
2023-09-10
yearly
0.5
```
Key elements of a `sitemap.xml` include:
- <url>: Each page on the website is represented by a url block.
- <loc>: The location of the page.
- <lastmod>: The date the page was last modified.
- <changefreq>: How often the page is likely to change (e.g., daily, weekly, monthly).
- <priority>: The priority of the page relative to other pages on the site, ranging from 0.0 to 1.0.
Using a `sitemap.xml` can improve a website's SEO by ensuring that search engines can easily discover and index the site's pages.