Chrome, from version 21 does not supports installing apps, extensions and user scripts from outside of Chrome Web Store. The most problematic situation is when users try to install scripts from Userscripts.org. When you click on the Install button from the user script page, you’ll get a message that says “Apps, extensions and user scripts cannot be added from this website.” There’s only one button for “OK”, and there’s nothing you can do apart from clicking it.
Previously, even after the message, the userscript was downloaded to the computer, but not anymore. The download process of the script won’t get started, and such a message will be displayed. Fortunately, we have a solution to this problem.
How to Install Userscripts on Chrome
This method will apply to installing userscripts from Userscripts.org, and from any other website that you trust. Firefox users will need to install the Greasemonkey extension to install userscripts. So without any further ado, let’s learn how to install such scripts on the latest version of Chrome.
Head over to Chrome Web Store and install the Tampermonkey extension. This is a userscript manager for Google Chrome that will help you to manage and edit all all your userscripts in the simplest way possible. With this extension, you can enable and disable userscript with just 2 clicks.
Once you’ve installed the Tampermonkey extension, head over to userscripts.org to install any script of your choice. Click on the “Install” button on Userscripts.org’s page. You’ll now get a pop-up asking “Do you want to install userscript in Tampermonkey or natively in Chrome”. Click on OK button to install this userscript with Tampermonkey.
Next, you’ll get a second pop-up window informing you about Userscript installation and its name. Click on OK. That’s all you need to do to install the userscript, and the same userscript will be automatically activated by Tampermonkey.
By clicking on the Tampermonkey icon from the toolbar, you can get new scripts or see which script is running on a particular page (for example; if you’ve installed YouTube center align script, and when you open YouTube, you’ll be able to see the name of active scripts running on YouTube). You can also force Tampermonkey to check for userscript updates or view Options. From “Options” page, you can enable, disable, trigger an update or remove a script in bulk. Think of this as a central page where you can perform many such important tasks.
Well, now that you know how to install Userscripts on Chrome, try installing useful scripts and enjoy using them. Use this method to bypass the restrictions placed by Google when installing anything outside of Chrome Web Store.