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AI-generated Key Takeaways
This audit helps improve website performance by ensuring ad tag library scripts are only loaded once per frame.
Loading duplicate scripts can slow down page load times and negatively impact user experience.
Chrome DevTools' Network tab, with grouping by frame enabled, can be used to identify the source of duplicate ad tag scripts.
AdSense and Google Publisher Tag have specific scripts that should be monitored to ensure single loading instances.
Overview
This audit ensures that no frames load the same ad tag library script more than
once. Including the same script multiple times is unnecessary and can lead to
decreased page performance.
Recommendations
Remove duplicate ad tag library scripts. In some cases, duplicate scripts can be
unknowingly loaded from two different locations. Examine where each duplicate
script is coming from by reviewing network traffic and grouping requests by
frame.
Identify the source of duplicate scripts
Use the Network tab in Chrome DevTools to determine which frame is loading duplicate scripts.
Open DevTools by pressing Control+Shift+J or Command+Option+J (Mac).
Navigate to the Network tab.
If not already visible, click Filter to open the filter bar and select
JS.
Open Network Settings and select
Group by frame.
Reload the page to capture network traffic.
More information
The following ad tag library scripts are supported:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-06-26 UTC."],[],["The audit identifies duplicate ad tag library scripts, which negatively impact page performance. To resolve this, users should remove the redundant scripts. Utilize Chrome DevTools' Network tab, filtering for JS and grouping requests by frame, to find where duplicates originate. Supported libraries include AdSense (with scripts `pagead2.googlesyndication.com/pagead/js/adsbygoogle.js` and `show_ads.js`) and Google Publisher Tag (`googletagservices.com/tag/js/gpt.js` and `securepubads.g.doubleclick.net/tag/js/gpt.js`). The goal is ensuring each script loads only once.\n"]]
to open the filter bar and select
JS.
and select
Group by frame.