A Chromium Extension that allows you to set a timer that counts down and then closes the tab.

Latest Version

Version
1.2.1
Update
November 8, 2024
Size
101KiB
Developer
Category
Users
6,000+
Rating
4.3125 ★
Manifest Version
3
Web Store Status
Languages Support
English (United States)
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Permissions
Alarms
Storage
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Tab Countdown Timer Extension

Allows you to quickly set a countdown timer on a tab. Once the timer expires, the tab closes. Every tab can have a different timer. Enter time by typing or by using a mousewheel.
---
Changes for v1.2.1
- Fixed \"undefined\" on first run issue.
- Improved styling.
- Time updates immediately upon opening popup.
- Added error handling
---
Changes for v1.1
- Add dark mode based on current system settings
- Save last alarm values as default for next time
- Update to chrome manifest v3
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "Tab Countdown Timer", "version": "1.2.1", "manifest_version": 3, "description": "A Chromium Extension that allows you to set a timer that counts down and then closes the tab.", "icons": { "16": "icons/hourglass16.png", "32": "icons/hourglass32.png", "48": "icons/hourglass48.png", "128": "icons/hourglass128.png" }, "action": { "default_popup": "popup/popup.html" }, "background": { "service_worker": "background/background.js" }, "permissions": [ "alarms", "storage" ], "content_security_policy": { "extension_pages": "script-src 'self'; object-src 'self'" }}
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How to download and manually install Tab Countdown Timer extension for Chrome

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

Method 1: Download Tab Countdown Timer extension and manually install through Drag &Drop

If you ever need to manually install a Tab Countdown Timer 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 Tab Countdown Timer Extension by clicking the "Download CRX" button on the website.

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

This is another method to install Tab Countdown Timer 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 Tab Countdown Timer extension file

Select and download the Tab Countdown Timer 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 Tab Countdown Timer 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 Tab Countdown Timer 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 Tab Countdown Timer 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 Tab Countdown Timer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Leandro Machado (ID: 00000044dab2486d) Voted 2 ★ - Updated 03/04/2023 Não esta funcionando na nova versão do chrome

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Shenmue Is Life (ID: 000000abbe942f03) Voted 5 ★ - Updated 12/31/2022 Works well now. Quick and simple.

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Chris Les (ID: 00000077b938e2a6) Voted 4 ★ - Updated 11/29/2022 What I've been looking for in FOREVER! I previously used two different Tab Closers - one was exactly like this give or take the look & feel, and the other made a loud noise to indicate when a tab was closing - and neither satisfied. But this one...I'm pretty confident in it. Thanks for this extension~ EDIT 11/29/22 - So the extension was updated with Dark Mode support...and it's currently pretty busted. Starting out, it said "undefined" in the text boxes and for awhile, I didn't know to take that text out and put in the numeral of hours/minutes that I wanted the tab to close on. Now it also doesn't show the time remaining when started. Pretty weird but still usable. Just a slight mess...Slight.

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Robert Szorady (ID: 000000887790f29c) Voted 5 ★ - Updated 11/20/2022 Totally works, the best one of these out there.

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coleo (ID: 000000771e303c70) Voted 3 ★ - Updated 11/15/2022 Used to work very well on my computer but no longer seems to function for some reason, Running windows 10. The timer simply doesnt activate when you plug in any numbers for me.