Analyze Web Vitals score and diagnostic

Latest Version

Version
0.2.0
Update
January 18, 2022
Size
1.07MiB
Developer
seochecker.it
Category
Users
1,000+
Rating
5 ★
Manifest Version
2
Web Store Status
Languages Support
English
See more
Permissions
Tabs
Storage
ActiveTab
Http://localhost/
Http://*/*
Https://*/*
Https://www.googleapis.com/pagespeedonline/v5/runPagespeed?*
See more

Web Vitals Tester Extension

Analyze Web Vitals score and metrics.

Check the performance of web site:
- Largest Contentful Paint (LCP);
- First Input Delay (FID);
- Cumulative Layout Shift (CLS).

Web Vitals is a recent Google initiative to provide unified guidelines for measuring essential quality elements to deliver an exceptional user experience on websites.

Google's Web Vitals initiative aims to simplify the landscape and help web developers focus on the metrics that matter most, the Core Web Vitals.

With Web Vitals, Google is specifying a set of 3 distinct performance metrics to make up their \"Core Web Vitals\" that they use to make a judgement on whether or not your website has a good user experience. Google is also specifying a few leading indicator metrics in the Web Vitals specification that are not classified as \"core.\"

Google has been promoting the importance of website speed since their inception, so no surprise here. However, this is the first time they explicitly identify the specific performance metrics that are used to drive their search rankings.

The Core Web Vitals focus on three simple UX characteristics of a page:
1 - Loading Times
2 - Interactivity (i.e page responsiveness)
3 - Visual Page Stability
The math behind the metrics can get tricky, but an understanding of what they're trying to accomplish may help simplify things.

The Core Web Vitals metrics are as follows:
- Largest Contentful Paint (LCP)
- First Input Delay (FID) / Total Blocking Time (TBT)
- Cumulative Layout Shift (CLS)
These Core Web Vitals are outcome metrics and a combination of other metrics may be used to act as leading indicators to predict user experience given a change.

Largest Contentful Paint (LCP): measures loading performance. To provide a good user experience, LCP should occur within 2.5 seconds of when the page first starts loading.

First Input Delay (FID): measures interactivity. To provide a good user experience, pages should have a FID of less than 100 milliseconds.

Cumulative Layout Shift (CLS): measures visual stability. To provide a good user experience, pages should maintain a CLS of less than 0.1.

Find out more:
- https://www.seochecker.it/
- https://www.seochecker.it/web-vitals-tester
Read more

Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "Web Vitals Tester", "version": "0.2.0", "manifest_version": 2, "description": "Analyze Web Vitals score and diagnostic", "homepage_url": "https://www.seochecker.it/web-vitals-tester", "icons": { "128": "icons/vitals128w.png", "256": "icons/vitals256w.png", "512": "icons/vitals512w.png" }, "browser_action": { "default_icon": "icons/default256w.png", "default_title": "Web Vitals", "default_popup": "src/browser_action/popup.html" }, "options_page": "src/options/options.html", "permissions": [ "tabs", "storage", "activeTab", "http://localhost/", "http://*/*", "https://*/*", "https://www.googleapis.com/pagespeedonline/v5/runPagespeed?*" ], "web_accessible_resources": [ "src/browser_action/viewer.css", "/node_modules/web-vitals/dist/web-vitals.es5.min.js" ], "content_scripts": [ { "matches": ["https://*/*", "http://*/*"], "css": ["src/browser_action/viewer.css"], "js": ["src/browser_action/lodash-debounce-custom.js"] } ], "background": { "scripts": ["src/bg/background.js"], "persistent": false }, "content_security_policy": "script-src 'self' https://www.googleapis.com; object-src 'self'"}
Read more

How to download and manually install Web Vitals Tester extension for Chrome

Looking for a way to install Web Vitals Tester 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 Tester extensions manually, this article outlines two simple methods to effortlessly install Web Vitals Tester extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download Web Vitals Tester extension and manually install through Drag &Drop

If you ever need to manually install a Web Vitals Tester 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 Tester Extension by clicking the "Download CRX" button on the website.

Look for the Web Vitals Tester extension you wish to install. Go to the website and download the Web Vitals Tester extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Web Vitals Tester 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 Tester 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 Tester extension for Chrome and install in Developer Mode

This is another method to install Web Vitals Tester 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 Tester extension file

Select and download the Web Vitals Tester 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 Tester 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 Tester 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 Tester 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 Tester extension in 2 ways. We hope this guide proves helpful.

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