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Tab Countdown Timer

Tab Countdown Timer

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View Tab Countdown Timer Chrome Extension on Chrome Web Store
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4.3 (19 ratings)
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A Chromium Extension that allows you to set a timer that counts down and then closes the tab.
Type
Extension
Users
6,000 users
500
lokico
View author page of lokico
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Hand-picked for quality and usefulness

Published
Published on August 6, 2020
Version 1.3.1
Manifest version
3
Updated
Updated on October 11, 2025
productivity/workflow
Extension Category
View on Chrome Web Store
View Tab Countdown Timer Chrome Extension on Chrome Web Store
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Extension Manifest

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{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Tab Countdown Timer",
    "version": "1.3.1",
    "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",
        "activeTab",
        "scripting"
    ],
    "content_security_policy": {
        "extension_pages": "script-src 'self'; object-src 'self'"
    }
}
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