To add Ads.txt to your website, you need to create a file of txt format.

The easiest way to do it is to dowload it from Admixer HB. Just click on Download button and it will appear in your Downloads list.

You also can create it manually. You need to create a file in any text editor, such as Notepad on Windows or TextEdit on MacOS.

In this file, you need to add all the lines specified on the site page in your account (where to find). After adding the lines, save the file on your computer with the name ads.txt.

Сreated file should be placed in the root directory of your website (for example, at the path yoursite.com/ads.txt). The methods of file uploading may vary:

• If you upload files to your site using FTP clients (for example, FileZilla), open the root directory of your site in the client, drag the ads.txt file you created there and wait for it to be uploaded to the server. 
• If you use a CMS system, the process of uploading the file is easier. For example, for WordPress, you can install the free Ads.txt Manager plugin, which allows you to add a file in a few clicks by following the instructions on the plugin page.

After uploading the file using any of the methods, make sure that by going to https://yoursite.com/ads.txt (where yoursite.com is your site's domain) you can view your file. An example of viewing a file: