Inject javascript to the webpage you are visiting

Latest Version

Version
1.2
Update
June 16, 2017
Size
59.53KiB
Developer
Category
Users
1,000+
Rating
4.22222 ★
Manifest Version
2
Web Store Status
Languages Support
English
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Permissions
ActiveTab
Storage
Tabs
ActiveTab
Http://*/
Https://*/
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Javascript Injector Extension

This extension allows you to inject any javascript code into the web page you are visiting. It remembers your page specific script and syncs it across all your devices.

For example, if you want to change the background color of https://duckduckgo.com/ with light blue, you can inject the script 'document.body.style.backgroundColor = \"lightblue\";' using this extension. After that every time you open this web site, the back ground will be light blue automatically.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 2, "name": "Javascript Injector", "author": "Daniel Han", "short_name": "JS injector", "description": "Inject javascript to the webpage you are visiting", "version": "1.2", "browser_action": { "default_icon": { "16": "images/icon16.png", "24": "images/icon24.png", "32": "images/icon32.png", "128": "images/icon128.png" }, "default_title": "Javascript Injector", "default_popup": "popup.html" }, "background": { "scripts": ["background.js"] }, "permissions": [ "activeTab", "storage", "tabs", "activeTab", "http://*/", "https://*/" ]}
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User reviews

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D_00 (ID: 000000d6f72f5e7f) Voted 3 ★ - Updated 04/24/2022 Okay tool I would say, but it would have been nice if the GUI was reworked a bit, and if it actually supported the `window.addEventListener(func)`. For me this never triggers, and I have to sometimes run the code at a point that it only affects part of the page because other elements have not fully charged yet.

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Valen Valenzaa (ID: 0000001204a61269) Voted 5 ★ - Updated 03/08/2022 มันใช้กับ google form ได้ยอดเยี่ยม สนใจวิธีใช้ติดต่อ ดาบดำ วาเลนไทน์ บนเฟคบุ็ค

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Ivan Pruchai (ID: 00000041e58b2695) Voted 4 ★ - Updated 02/04/2020 It works, but after page reloaded you need to paste code and save again.

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Yassine Safraoui (ID: 000000a14df3303b) Voted 5 ★ - Updated 08/02/2019 Works like charm, but there is a feature I miss tough, since you can remember the code running on a website, it would be preferred to make like a list of snippets the user can run, or disable on a website real quickly.

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Steve Wood (ID: 00000009014a000e) Voted 5 ★ - Updated 01/02/2019 It worked for me