Measure metrics for a healthy site
Web Vitals Extension
The extension supports all of the Core Web Vitals and captures:
Largest Contentful Paint
Cumulative Layout Shift
Interaction to Next Paint
It also supports the diagnostic metrics:
Time to First Byte
First Contentful Paint
And finally, it temporarily supports the following deprecated metrics:
First Input Delay
The extension provides three core features:
1) Ambient Badge - This helps check if a page passing the Core Web Vitals thresholds.
Once installed, the extension will display a disabled state badge icon until you navigate to a URL. At this point it will update the badge to green or red depending on whether the URL passes the Core Web Vitals metrics thresholds.
The badge has a number of states:
* Disabled - gray
* Passing - green
* One or more metrics failing - red
If one or more metrics are failing, the badge will animate the values of these metrics.
2) Detailed drill-down in the popup
Clicking the Ambient badge icon will allow you to drill in to the individual metric values. In this mode, the extension will also say if a metric value might change or requires a user action.
For example, First Input Delay requires a real interaction (e.g click/tap) with the page and will be in a waiting for input state until this is the case. We recommend consulting the web.dev documentation for LCP, CLS and FID to get an understanding of when metric values settle.
As of version 1.0.0, the popup combines your local Core Web Vitals experiences with real-user data from the field via the Chrome UX Report (CrUX) API. This integration gives you contextual insights to help you understand how similar your individual experiences are to other desktop users on the same page. We've also added a new option to \"Compare local experiences to phone field data\" instead, if needed. Note that CrUX data may not be available for some pages, in which case we try to load field data for the origin as a whole.
3) HUD Overlay
The overlay displays a Heads up display (HUD) which overlays your page. It is useful if you need a persistent view of your Core Web Vitals metrics during development. To enable the overlay:
Right-click on the Ambient badge and go to Options.
Check Display HUD overlay and click 'Save'
Reload the tab for the URL you wish to test. The overlay should now be present.
Source Manifest.json
How to download and manually install Web Vitals extension for Chrome
Looking for a way to install Web Vitals extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.
However, you may need to install Web Vitals extensions manually, this article outlines two simple methods to effortlessly install Web Vitals extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download Web Vitals extension and manually install through Drag &Drop
If you ever need to manually install a Web Vitals extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.
Step 1: Download the Web Vitals Extension by clicking the "Download CRX" button on the website.
Look for the Web Vitals extension you wish to install. Go to the website and download the Web Vitals extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Web Vitals extension that contains all the data.
Step 2: Extract &Arrange Files
Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.
Step 3: Go to the Chrome Extensions Page
Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.
Step 4: Drag and Drop the Extension
Now, go to the folder where you extracted the Web Vitals extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.
Step 5: Complete the Installation
Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.
Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.
Method 2: Download Web Vitals extension for Chrome and install in Developer Mode
This is another method to install Web Vitals extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.
Step 1: Download the Web Vitals extension file
Select and download the Web Vitals extension by clicking the 'Download CRX' button on the website.
Step 2: Extract the downloaded contents
Convert the file to a ZIP file if it is in CRX format then extract the Web Vitals extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Web Vitals extension running.
Step 3: Open Chrome Extension Setting Page
In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.
Step 4: Enable Developer Mode
After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.
Step 5: Load the Unpacked Extension
Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."
Step 6: Select the Extension Folder
Once the pop-up opens upon clicking Load unpacked, select the Web Vitals extension directory and click on the "Select Folder "button.
Step 7: Confirm and Install
After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.
Conclusion
Here we've made a step-by-step guide on How to manually install Web Vitals extension in 2 ways. We hope this guide proves helpful.
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