Prevent duplicate tabs

Latest Version

Version
0.7.10
Update
April 3, 2023
Size
41.27KiB
Developer
Category
Users
5,000+
Rating
4.45833 ★
Manifest Version
2
Web Store Status
Languages Support
Deutsch
English
Français
Español
Português (Brasil)
日本語
한국어
See more
Permissions
Tabs
Storage
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Prevent Duplicate Tabs Extension

Prevents automatic creation of new tabs or repeating tabs when two or more tabs have the same addresses

The process of closing repeated tabs is automatic based on the settings that you can determine within the extension/add-on, it is also possible to quickly disable and activate the add-on without having to access the extensions panel.

You can add a host or URL to specify as an exception so that the add-on doesn't close repeating tabs.

The extension/add-on has support for closing repeated tabs in incognito/incognito mode, but this works in isolation and will not share any information from incognito mode with normal mode, they are completely separate actions.

Among the settings you can choose to consider or disregard querystring and hashes in URLs as a factor to differentiate them.

It is also possible to configure if you prefer to close the oldest tabs and if you want to prevent the active tab (currently visible) from being closed.

Closing tabs works based on Chrome API events and you can disable or re-enable such events within the extension/add-on:


  • Start event - Close repeated tabs when your browser is launched

  • Update event - Close repeated tabs when a tab is updated, more details in tabs.onUpdated.addListener

  • Create event - Close repeated tabs when a new tab is created, more details in tabs.onCreated.addListener

  • Replace event - Close repeated tabs when a tab is replaced with another tab due to prerendering or instant, more details in tabs.onReplaced.addListener

  • Attach event - Close repeated tabs when a tab is attached to another window or detached (creating a new window), more details in tabs.onAttached.addListener

  • Datachange event - Close repeated tabs when you change \"sort order\", \"URLs\", \"others\" and \"events\" configurations from extension

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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "author": "Guilherme Nascimento", "name": "Prevent Duplicate Tabs", "description": "Prevent duplicate tabs", "version": "0.7.10", "manifest_version": 2, "default_locale": "en", "icons": { "16": "images/icon.png", "32": "images/32x.png", "48": "images/48x.png", "128": "images/128x.png" }, "browser_action": { "default_icon": "images/icon.png", "default_popup": "views/popup.html#popup" }, "options_ui": { "page": "views/popup.html#config" }, "background": { "scripts": [ "js/boot.js", "js/background.js" ] }, "permissions": [ "tabs", "storage" ]}
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How to download and manually install Prevent Duplicate Tabs extension for Chrome

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

Method 1: Download Prevent Duplicate Tabs extension and manually install through Drag &Drop

If you ever need to manually install a Prevent Duplicate Tabs 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 Prevent Duplicate Tabs Extension by clicking the "Download CRX" button on the website.

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

This is another method to install Prevent Duplicate Tabs 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 Prevent Duplicate Tabs extension file

Select and download the Prevent Duplicate Tabs 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 Prevent Duplicate Tabs 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 Prevent Duplicate Tabs 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 Prevent Duplicate Tabs 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 Prevent Duplicate Tabs extension in 2 ways. We hope this guide proves helpful.

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User reviews

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COW KING (THE COW KING) (ID: 0000007f1ee8a960) Voted 5 ★ - Updated 02/15/2024 one of the best tools. the toolbar icons could be more intuitive need a one-click-switch option

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Sam Jones (ID: 0000006149025487) Voted 4 ★ - Updated 09/17/2023 Would be perfect if it automatically closed chrome://newtab pages also. For some reason it doesn't detect this as a duplicate

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Rafael Miranda Soares (ID: 000000fe133a5055) Voted 5 ★ - Updated 09/03/2023 O melhor atualmente da loja!

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Mike Geesing (ID: 0000003bc3a31a8f) Voted 5 ★ - Updated 07/16/2023 Great! This addon have an option to prevent duplicate tabs from different windows, that was exactly what I was searching for.

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Cristofer (ID: 000000d266a2d4cf) Voted 1 ★ - Updated 02/08/2023 99% cpu? no thanks