--- title: "How to use the History Center" date: "2025-09-24T06:53:29+00:00" summary: "Learn to navigate and interpret the History Center for comprehensive website analytics and performance tracking." image: type: "page" url: "/web-governance/how-use-history-center" id: "e33e77ae-a850-4075-ae79-fc1e9cdd2699" --- Table of contents will be added Setup ----- The History Center is included in all packages. No setup is required. Navigation ---------- This section provides instructions on how to navigate through the _History Center_ module. 1. Click **History Center** (bar graph icon), located on the top menu bar, or click the **Show History** link in the History Center section on the dashboard. ![The location of the History Center button on the domain menu bar.](https://acquia.widen.net/content/99c7c82b-6912-4aaa-8a27-b6e0698f2069/web/WebGov_MainToolbar-HistoryCenterButton) The _History Center_ landing page opens. ![The history center landing page. The fields are described in the document text.](https://acquia.widen.net/content/cbc1c0b8-62f0-46f4-90c7-061cd4444973/web/Mon_Opt_HistoryCenter-Dashboard.png) Note An orange line for the All Modules indicator on the graph indicates that an upgrade was done on the account, for example with a new browser service. This line shows the difference in results versus before the upgrade, due to the new way the pages are rendered. This upgrade could affect the compliance score. Click on the orange line for further explanations and details. For more information, visit: [Visual indication when your domain is being scanned with a new browser service.](/web-governance/help/59211-visual-indication-changed-browser-service "Visual indication with changed browser service") ### Landing page The page has the following layout: * **Domain**: In the first field, click to expand the list of domains. ![The Domains selection menu. Your domains appear in the drop-down list.](https://acquia.widen.net/content/dde969d2-5087-4d12-b90c-fc0f09c43b2d/web/Mon_Opt_HistoryCenter-Dashboard-DomainsDropdown.png) * Select a domain from the list or switch to another domain. * **Module**: In the second field, click to expand the list of available modules. ![The location of the Modules selection drop-down on the History Center landing page.](https://acquia.widen.net/content/f7004dc9-afe5-4ab5-b975-a171a65bcf0b/web/Mon_Opt_HistoryCenter-Dashboard-ModulesDropdown.png) * Select a module from the drop-down list. * **Go to Domain**: This link returns you to the domain dashboard. ![The location of the Go To Domain link on the History Center dashboard above the graph.](https://acquia.widen.net/content/7c784a9d-5f1a-4197-874e-1e8ce9b9ea00/web/Mon_HistoryCenter-Dashboard-GoToDomainButton.png) * The main chart shows the following information: * **Pages with Accessibility Issues** For more information, visit [Accessibility History](/node/86066). * **Pages with SEO Opportunities** For more information, visit [Search Engine Optimization (SEO)](/node/58841). * **Pages with QA Issues** For more information, visit [Quality assurance](/node/58791). * **Pages with Policy Issues** For more information, visit [Policies](/node/59341). * **Pages Crawled** * **Documents Crawled** For more information, visit [Documents](/node/58551). * **Changes Since Previous Crawl**: Percentage of changes made since the last scan. The results are also listed under the graph, along with the date and time of each scan. ### Filtering Use the date selection to filter for a specific period of time. ![The location of the date selection filter on the History Center landing page.](https://acquia.widen.net/content/2a232bd8-71d8-478b-962e-a9d472b807ff/web/Mon_Opt_HistoryCenterDashboard-DateFilter.png) Report information ------------------ This section provides the details about the information that is found in the History Center report for each of the modules. ### All Modules - Content with Issues * Crawled at: Date and time of the last scan * Pages with issues or opportunities, per module. ### SEO Search Engine Optimization * Crawled at: Date and time of the last scan. * Pages crawled: Number of pages from the last scan. * Domain compliance: Percentage of compliance achieved. * SEO Opportunities: The number of opportunities for improvement, broken down into category icons.  For more information, visit [Search Engine Optimization (SEO)](/node/58841). ### Quality Assurance * Crawled at: Date and time of the last scan. * Pages crawled: Number of pages from the last scan. * Documents crawled: Number of documents from the last scan. * Domain compliance: Percentage of compliance achieved. * QA errors: The number of Quality Assurance errors, broken down into category icons. For more information, visit [Quality assurance](/node/58791). ### Policies * Crawled at: Date and time of scan. * Pages crawled: Number of pages from the last scan. * Documents crawled: Number of documents from the last scan. * Domain compliance: Percentage of compliance achieved. * Policies: The number of policy issues, broken down into category icons. For more information, visit [Policies](/node/59341). ### Accessibility * Crawled at: Date and time of scan. * Pages crawled: Number of pages from the last scan. * Domain compliance: Percentage of compliance achieved. * Failing checks: The number of checks that do not pass the accessibility criteria, broken down into category icons. * Issues: Total number of accessibility issues that need to be handled.  For more information, visit [Accessibility](/node/61661) ### Readability * Crawled at: Date and time of scan. * Pages crawled: Number of pages from the last scan. * Readability levels: Total number of issues per readability level criteria, broken down into category icons that represent the reading grade level. For more information, visit [Quality Assurance Readability](/node/58816). ### Performance * Scanned at: Date and time of scan. * Performance Pages: Number of pages from the scan that were checked for performance issues. * Avg. Performance Score: The average of the overall performance score percentage. This is a weighted average of the _metric scores_, which means that some metrics have more impact on your overall Performance score. This figure is calculated in the background, it is not an average of the statistics in the shown categories. * Avg. First contentful paint (FCP): The average Milliseconds that differ from the last scan. This metric marks the time at which the first text or image is painted by measuring how long it takes the browser to render the first piece of DOM content after a user navigates to your page. * Avg. Largest contentful paint (LCP): This metric represents the average time duration between the user initiating the page load and the page rendering its primary content. * Avg. Time to interactive (TTI): The average Milliseconds that differ from the last scan. This metric refers to the amount of time it takes for the page to become fully interactive. Measuring TTI is important as some sites optimize content visibility at the expense of interactivity, which can lead to a frustrating user experience. This is because the site may appear to be fully loaded, but when the user attempts to interact with it, nothing happens. * Avg. Speed Index (SI): This metric shows the average speed at which the content on a page is visibly populated. * Avg. Total Blocking Time (TBT): This is the average sum of all time periods between FCP and Time to Interactive when the task length has exceeded 50ms, expressed in milliseconds. * Avg. Cumulative Layout Shift (CLS): This is the averaged cumulative measurement of the movement of visible elements within the viewport. For more information, visit [How to use the Performance add-on](/node/59356). ### Data Privacy * Crawled at: Date and time of scan * Count of pages with Data Privacy (DP) issues * Count of DP issues * Count of active DP issues * Count of ignored DP issues * Count of fixed DP issues * Count of High Priority issues * Count of Medium Priority issues * Count of Low Priority issues For more information, visit [How to use the Data Privacy add-on](/node/58921). Additional resources -------------------- For more information, visit [Visual indication when your domain is being scanned with new browser service](/web-governance/help/59211-visual-indication-changed-browser-service "Visual indication with changed browser service").