Is Customize Scrollbar safe to install?

What data it declares

The developer declares that it does not collect or use your data.

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing links to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

When you add it, Chrome asks you to allow it to:

• Read and change all your data on all websites

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

Routine for an extension

• Store data in your browser storage
• Store data in your browser without the usual size limit unlimitedStorage

Pages it runs its code on

It runs its own code on every page you open: the manifest declares a content script for all sites.

• <all_urls> every site
• *://*.cusmize.com/* cusmize.com and all its subdomains
• *://*.youtube-customizer.com/* youtube-customizer.com and all its subdomains

A content script is code the extension injects into pages matching these patterns. On those pages it can read and change what you see, whether or not a host permission is listed above.

Sites that can connect to it

Web pages matching these patterns can open a messaging channel to it: 6 site patterns.

• *://*.youtube-customizer.com/* youtube-customizer.com and all its subdomains
• *://*.cusmize.com/* cusmize.com and all its subdomains
• *://custom-scrollbar.com/* only custom-scrollbar.com

Declared as externally connectable in the manifest: a page on these sites can exchange messages with the extension, for example to tell it you have signed in. It does not give the page access to your browser.

How usual this is for its category

In Productivity · Tools, 20% of extensions ask for access to every site. This one: Runs its code on every site.

The typical extension there declares 3 browser permissions; this one declares 2 browser permissions.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

672 users

• Last updated in the store 137 days ago, on 2026-06-16.
• No new version in the last 90 days.

What the store shows

The store shows none of its badges on this listing. Most listings carry none.

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

The permissions this extension requests have not changed since we started watching it.

Who publishes it

Smart Tools Sprt, who publishes 4 listings we track. This listing has been in the store since 2025-05-06 and was last updated on 2026-06-16.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

1. Custom Scroll Bar Pro Runs its code on every site · 1 permission 788 users ★ 4.2

How to check or remove it in Chrome

1. Type chrome://extensions in the address bar and find the extension in the list.
2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
3. To uninstall it, choose Remove on the same page.

Questions people ask

What can Customize Scrollbar access?

No site access is declared in the manifest, so it cannot read the pages you open on its own. It declares 2 browser permissions.

What data does Customize Scrollbar collect?

The developer declares that it does not collect or use your data. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

Has Customize Scrollbar asked for more permissions over time?

The permissions this extension requests have not changed since we started watching it.

Does Customize Scrollbar publish a privacy policy?

Yes, the store listing links to a privacy policy.