Countdown & countup timer, with simple interface and ability to run multiple timers.
countDown Extension
I'm working on an improved input system, but for now a quick start for how to use the current one:
You can use the mouse scroll wheel, just point to the right time field and scroll the wheel up/down to adjust the value (ddd hh:mm:ss).
You can also use the keyboard by directly typing the desired time. First click on one of the timers (anywhere beside notes) and input your time.
Examples:
To set 15 minutes: 15. or 1500 (00:15:00)
To set 72 hours (3 days): 72.. or 3... (3 00:00:00)
To set 3 hours and 45 minutes: 345. or 3.45. (03:45:00)
To set 90 seconds (1:30): 90 or 1.30 (00:01:30)
Fixes:
* Fixed keyboard input not registering
Features:
* Tricky input (still working on it)
* (new ) TTS for notes
* (new) Shortcuts on badge timer
* (new) Options to set different sound alarms and volume
* (new) Notification alert (optional)
* (new) Multiple colour themes
* Multiple timers
* High range of spans with up to several years
* Count up like stopwatch (to start, set the timer from 00:00:00)
* Optimised for extensive use
* Display timer one the icon badge
* Set and navigate the timers with keyboard
* Set timer with scroll wheel
* Custom notes for each countdown
P.S. Rate the extension and spread the word to encourage the developer (me) to dedicate more time in implementing more features.
Source Manifest.json
How to download and manually install countDown extension for Chrome
Looking for a way to install countDown 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 countDown extensions manually, this article outlines two simple methods to effortlessly install countDown extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download countDown extension and manually install through Drag &Drop
If you ever need to manually install a countDown 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 countDown Extension by clicking the "Download CRX" button on the website.
Look for the countDown extension you wish to install. Go to the website and download the countDown extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for countDown 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 countDown 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 countDown extension for Chrome and install in Developer Mode
This is another method to install countDown 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 countDown extension file
Select and download the countDown 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 countDown 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 countDown 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 countDown 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 countDown extension in 2 ways. We hope this guide proves helpful.
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User reviews

(ID: ) Voted 5 ★ - Updated 08/22/2024
Sam H (ID: 00000080f483f005) Voted 5 ★ - Updated 05/11/2024
Александр (ID: 00000099c0e18e5e) Voted 5 ★ - Updated 02/25/2024
Marcus Garcia (ID: 000000788d033872) Voted 5 ★ - Updated 02/23/2024
Sadman Hossain (ID: 00000035b16c0a05) Voted 5 ★ - Updated 11/29/2023