This extensions displays some technical and structural performance data of websites.

Latest Version

Version
0.1.3
Update
December 30, 2013
Size
19.31KiB
Developer
Category
Users
1,000+
Rating
4.375 ★
Manifest Version
2
Web Store Status
Languages Support
English
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Permissions
Tabs
*://*/*
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performance-HTML Extension

This extension determines and displays some very useful performance data of websites in a quick and easy way. Just open the website you want to inspect, click the icon in the browser bar and a popup shows up.

The popup will show performance data like: DNS Lookup Time, Network Connection Time, Time to First Byte, Document Ready and Document Complete. It also shows some performance information in terms of the DOM, such as number of external files (Javascript, CSS) or number of DOM elements. And finally there is a panel for memory usage of Javascript execution.

This extension will give you the possibility to get a quick overview of the performance of a website and to compare it with other sites.

Feedback is very welcome! If you have some feedback or ideas for additional information to show in the popup, don't hesitate to contact me.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 2, "name": "performance-HTML", "description": "This extensions displays some technical and structural performance data of websites.", "version": "0.1.3", "permissions": [ "tabs", "*://*/*" ], "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'", "browser_action": { "default_icon": "images/icon-24.png", "default_popup": "popup/index.html" }, "content_scripts": [ { "matches": ["*://*/*"], "js": ["content.js"] } ], "icons": { "16": "images/icon-16.png", "48": "images/icon-48.png", "128": "images/icon-128.png" }}
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How to download and manually install performance-HTML extension for Chrome

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

Method 1: Download performance-HTML extension and manually install through Drag &Drop

If you ever need to manually install a performance-HTML 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 performance-HTML Extension by clicking the "Download CRX" button on the website.

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

This is another method to install performance-HTML 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 performance-HTML extension file

Select and download the performance-HTML 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 performance-HTML 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 performance-HTML 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 performance-HTML 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 performance-HTML extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Yair Zilberman (ID: 000000827d97accc) Voted 5 ★ - Updated 07/16/2016 Great tool !!! To see true data you have to delete browser cache and do an "hard reload" - You can do so by hitting the F12 button and right clicking the refresh button!

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Лев «LEvGenich» (ID: 00000046f8468dda) Voted 5 ★ - Updated 01/16/2016 Отлично

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David LEPAUX (ID: 000000273e70258a) Voted 1 ★ - Updated 06/26/2015 Ne fonctionne pas

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Evil Reiko (ID: 000000339a0ba486) Voted 4 ★ - Updated 04/30/2015 Useful too! I noticed that the information under "DOM structure and Elements" is correct, but the "Website Speed" information is in-accurate.

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Joe Tooman (ID: 000000f7bd39bca8) Voted 5 ★ - Updated 03/27/2014 Great utility to see performance metrics on a page.