Google Chrome DevTools Extension for analyzing DOM size

Latest Version

Version
1.25
Update
September 4, 2019
Size
58.04KiB
Developer
Category
Users
3,000+
Rating
3.58333 ★
Manifest Version
2
Web Store Status
Languages Support
English
See more
Permissions
*://*/*
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Dom Size Analyzer Extension

According to (https://developers.google.com/web/tools/lighthouse/audits/dom-size), an optimal DOM tree has the following properties:
-Has less than 1500 nodes total.
-Has a maximum depth of 32 nodes.
-Has no parent node with more than 60 child nodes.

We can use this devtool to analyze a page's DOM to easily find out which parts of the page are adding weight to it.

****NEW*****
Scrolling the DOM element into view and highlighting it when hovered in this devtool.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 2, "name": "Dom Size Analyzer", "description": "Google Chrome DevTools Extension for analyzing DOM size", "version": "1.25", "permissions": ["*://*/*"], "devtools_page": "devtools.html", "web_accessible_resources": ["injectable.js"], "content_scripts": [ { "matches": [""], "js": ["contentScript.js"] } ], "background": { "scripts": ["backgroundScript.js"], "persistent": false }}
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How to download and manually install Dom Size Analyzer extension for Chrome

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

Method 1: Download Dom Size Analyzer extension and manually install through Drag &Drop

If you ever need to manually install a Dom Size Analyzer 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 Dom Size Analyzer Extension by clicking the "Download CRX" button on the website.

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

This is another method to install Dom Size Analyzer 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 Dom Size Analyzer extension file

Select and download the Dom Size Analyzer 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 Dom Size Analyzer 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 Dom Size Analyzer 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 Dom Size Analyzer 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 Dom Size Analyzer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Justin Golden (ID: 0000007c167c68af) Voted 5 ★ - Updated 06/21/2023 Takes a restart to work and shows up in the inspect element view. A little unintuitive to get working at first, but once it works, 5 stars! Very useful.

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Mr Velocity (ID: 0000000ea21a4ee6) Voted 1 ★ - Updated 06/18/2023 could be useful if it did anything

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Patrick Weis (ID: 00000086f1f8bb01) Voted 5 ★ - Updated 06/08/2022 Does what it's supposed to do :) very useful

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Terry Ellis (ID: 000000d9e076b1e5) Voted 5 ★ - Updated 12/24/2021 Doesn't seem to work, no tab displayed in dev tools EDIT - working after a browser restart :-)

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Bo Twerdowsky (ID: 000000f6601406ef) Voted 5 ★ - Updated 10/09/2021 Installs easily, works well in Chrome. The info is detailed, a lot to unpack for someone who's not a dev. But it points out areas that need to be pared down, and at least gives me insight into which of my pages are too heavy on nodes.