app-ads.txt Verification

1Why app-ads.txt is Required#

Google AdMob now REQUIRES app-ads.txt file verification for all apps that show ads. Without this verification:

❌ Your ads may not serve properly
❌ You may lose potential revenue
❌ Your AdMob account may face restrictions

✅ With app-ads.txt: Higher ad fill rates and better CPM

2Get Your Publisher ID#

Your Publisher ID is the first part of your AdMob App ID:

• If your App ID is: ca-app-pub-1234567890123456~1234567890
• Your Publisher ID is: pub-1234567890123456

You need to enter this in the generator app.

Format:
pub-1234567890123456

Example:
ca-app-pub-1234567890123456~9876543210
         ↓
pub-1234567890123456

3Get Your Developer Website#

You must have a website URL where you'll host the app-ads.txt file. This can be:

• Your personal website
• Your company website
• A simple GitHub Pages site
• Any domain you own

Note: The website must be publicly accessible and use HTTPS.

Valid examples:
https://yourwebsite.com
https://yourdomain.com
https://username.github.io

5Upload to Your Website#

Upload the app-ads.txt file to your website's root directory:

• File must be at: https://yourdomain.com/app-ads.txt
• Not in a subdirectory
• Must be plain text file
• Must be publicly accessible (no login required)

Correct:
https://yoursite.com/app-ads.txt ✅

Incorrect:
https://yoursite.com/folder/app-ads.txt ❌
https://yoursite.com/files/app-ads.txt ❌

6File Content Format#

Your app-ads.txt file should contain this exact format:

google.com, pub-1234567890123456, DIRECT, f08c47fec0942fa0

Replace 'pub-1234567890123456' with YOUR actual Publisher ID

7Verify in AdMob Dashboard#

After uploading the file:

1. Go to AdMob dashboard
2. Navigate to Settings > Account Information
3. Look for 'app-ads.txt' status
4. It may take 24-48 hours for Google to verify
5. Status should show 'Verified' when done

8Test Your File#

Before waiting for AdMob verification, test your file:

• Open browser and go to: https://yourdomain.com/app-ads.txt
• You should see the file content
• If you get 404 error, file is not in the correct location
• If you see HTML instead of text, wrong file type

AdMob app-ads.txt Guide →

9Common Issues & Solutions#

❌ File not found (404): Upload to root directory, not in a folder

❌ Wrong format: Use EXACTLY the format shown (comma-separated, no extra lines)

❌ Wrong Publisher ID: Double-check your AdMob Publisher ID

❌ Website not accessible: Ensure HTTPS and no password protection

✅ Multiple Publisher IDs: Add each on a new line in the file

✅ Subdomain: If using subdomain (app.yoursite.com), file must be there too

10GitHub Pages Example#

If you don't have a website, use GitHub Pages (FREE):

1. Create a GitHub repository named: yourusername.github.io
2. Upload app-ads.txt file to the root
3. Enable GitHub Pages in repository settings
4. Your file will be at: https://yourusername.github.io/app-ads.txt
5. Use this URL as your Developer Website in the generator

GitHub Pages Setup →