Troubleshooting ad serving and delivery should not be a daunting task. When something breaks, there has to be something that tells you exactly what is going on and how to fix it. In fact, a good tool not only tells you when something goes wrong but warns you beforehand.
Below we provide you with a guide on how to diagnose ad serving issues and the best tools to use:
While the webpage you are troubleshooting is open, you can load devtools by a keyboard shortcut CTRL+Shift+C or simply hitting the F12 key.
The Elements tab opens if using CTRL+Shift+C.
F12 key opens the Console tab.
HAR (HTTP Archive) is a file in JSON object format with a particular field distribution, used by several HTTP session tools to export the captured data (source: https://toolbox.googleapps.com/apps/har_analyzer/). There will be times when Google support would ask for this file to assist them in troubleshooting.
Be careful with this file as it contains sensitive information:
If Google publisher support asks for a HAR file, here’s how to export it:
Step 1: Open DevTools
Step 2: Go to the Network tab
Step 3: Right-click on any of the contents
Step 4: Save all as HAR with content
Step 5: Select a folder
Step 6: Save
Search for ads? in the Network tab. Ad request calls are those that start with https://securepubads.g.doubleclick.net in the request URL. Important values to check are the following:
Filter or search for view? in the Network tab. This allows you to verify if impressions are firing and accounted for.
Search for activeview? in the Network tab. Important values to check are the following:
You can find more information here.
Search for click? in the Network tab. This is to check if clicks are firing and if multiple click pings are being fired which could lead to discrepancies or inaccurate reporting. Important values to check:
The Publisher Console is a handy tool from Google that allows you to understand webpages’ ad requests, winning line items, and underlying tagging mechanisms.
Once activated, use Ctrl+F10 (Windows) and Fn+CTRL+F10 (Mac) to open/close the Console.
Ad Slots tab provides information about the ads, line items, and creatives served on-page.
Page Request tab helps you understand page requests and their mechanisms.
PubGuru Ad Inspector is a Chrome extension with more sophisticated checks and features, making it the troubleshooting tool of choice for publishers. It can run on any device regardless of the screen size. It can diagnose issues with Header Bidding and Google Ad Manager providing clear actionable advice on errors, warnings, and passes.
Download it from here.
PubGuru Ad Inspector has different tabs performing different levels of checks so you see everything that’s going on with the site in real-time and take action as needed.
When you sign up with PubGuru, you’ll get Smart Notifications, which means you get notified in real-time when something goes wrong saving you time from having to manually check the site every so often.
Here’s the course that 300+ pubs used to scale their ad revenue.