If you hosting your blog on Blogger platform (or Blogspot), then you would know that Google does not let you upload anything on your blog directories unlike WordPress. Till now this never seemed like a challenge to me, however, Adsense made me scratch my head for almost an hour over this. Recently, I got a message from Adsense asking me to fix "some ads.txt file issues to avoid severe impact to your revenue." And to fix this issue, I was needed to upload an ads.txt file on the root directory of my Blogger blog. Wait, what!?
First of all, what is ads.txt?
According to Google Adsense
Authorized Digital Sellers, or ads.txt is an IAB initiative that helps ensure that your digital ad inventory is only sold through sellers (such as AdSense) who you've identified as authorized. Creating your own ads.txt file gives you more control over who's allowed to sell ads on your site and helps prevent counterfeit inventory from being presented to advertisers.
We strongly recommend that you use an ads.txt file. It can help buyers identify counterfeit inventory and help you receive more advertiser spend that might have otherwise gone toward that counterfeit inventory.
...and how to add this ads.txt file to a website/blog?
1. Sign in to your AdSense account.
2. In the alert on your homepage, click Fix now.
3. Click the Down Arrow to open the "Create an ads.txt file for..." message.
4. Click Download. Your ads.txt file is automatically downloaded.
5. Upload the file to the root level domain of your site (for example, https://example.com/ads.txt).
Root levels are one level down from what’s listed in the public suffix list. For example, "google.co.uk" is a root domain of "co.uk" but "maps.google.co.uk" is not. See the IAB ads.txt specification.
Note: If you’re using another ad network, remember to add that network to your ads.txt file. Contact your ad network for their ads.txt information.
So how do we do this on Blogger blog because, you know...?
1. Sign in to Blogger.
2. In the top left, click the Down arrow .
3. Click the blog you want to set up an ads.txt file on.
4. On the left, click Settings.
5. Under "Settings," click Search preferences.
6. Under "Monetization," find "Custom ads.txt" and click Edit.
7. Click Yes.
8. Copy the settings from your third-party monetization provider and paste them in the text box.
9. Click Save settings.
Optional: To check the content of your ads.txt file, go to http://<your blog address>/ads.txt.
Note: If you are using WordPress, you might consider using a plugin, and this search might help you find the right plugin for your blog.
