Publisher Ads Audits for Lighthouse improves ad speed and overall quality through a series of automated audits. This tool helps resolve discovered problems and evaluates the effectiveness of iterative changes while suggesting actionable feedback.

Publisher Ads Audits for Lighthouse is built on top of Lighthouse, an open source tool integrated into Chrome DevTools that is widely used by developers. By default, the reports that Publisher Ads Audits for Lighthouse produce include all categories currently included in Lighthouse along with an additional "Publisher Ads" category that appears at the top.

We are currently in beta and still in the development process. To help us improve, please submit feedback to let us know of any issues or suggestions you have.

Web service

Publisher Ads Audits for Lighthouse is a web service that fetches a site remotely for analysis.

By default, results are generated for mobile using a headless version of Chrome, emulating a Nexus 5X. Results for desktop without emulation can be generated by selecting the Desktop tab at the top of the results page.

For more specific information about the environment under which results are generated, see the Runtime settings section at the bottom of each report.


Advanced settings

Additional Lighthouse audits

By default, only Publisher Ads audits and the Lighthouse performance audit will be included in generated reports. To include the full suite of Lighthouse audits, enable the Run Additional Lighthouse Audits options


Custom cookies entered in the Enter Cookies text box will be included when requesting the specified web page. This can be used to pass state information to the page, for example to allow access to a page that requires authentication.

Multiple cookies may be specified. The expected format is:

cookie1=value1; cookie2=value2;

Simulated throttling

By default, audit scores are based on the result of loading your page on a desktop CPU over an unthrottled wired broadband connection. To evaluate the performance of your site under less favorable conditions, enable the Use Simulated Throttling option.

When enabled, scores are calculated using a simulation of page load, which is based on data observed during an unthrottled page load. The simulation uses the Lighthouse throttling default, which limits both CPU speed and network bandwidth. This approximates the performance of an actual mobile device loading your site over a fast 3G connection.


A bookmarklet is available for on-demand scanning of a current page.

Drag the following button to your bookmarks bar:

Click this button on any page to generate a report for the current url.


To provide feedback, please file an issue on GitHub.