Is U-Cursedn't 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 does not link 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 your data on all u-cursos.cl sites and www.u-cursos.cl
• Modify data you copy and paste
• Read your browsing history

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

Specific sites only: 1 match pattern.

• *://*.u-cursos.cl/* u-cursos.cl and all its subdomains

Reaches your browsing data or every site

• See the address and title of every tab you have open tabs

Worth knowing

• Run its own code on the pages it can access scripting

Routine for an extension

• Act on the current tab, but only after you click it activeTab
• Put data on your clipboard clipboardWrite
• Store data in your browser storage

Pages it runs its code on

It runs its own code on specific pages only: 19 site patterns.

• *://*.u-cursos.cl/* u-cursos.cl and all its subdomains
• *://www.u-cursos.cl/* only www.u-cursos.cl
• *://*.u-cursos.cl/*/*/*/*/*/notas/* u-cursos.cl 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.

What it may ask for later

Not granted when you add it: Chrome asks you the moment the extension requests one of these, and you can refuse.

• https://claude.ai/* only claude.ai
• https://chatgpt.com/* only chatgpt.com
• https://gemini.google.com/* only gemini.google.com

How usual this is for its category

In Productivity · Education, 17% of extensions ask for access to every site. This one: Access to specific sites only.

The typical extension there declares 3 browser permissions; this one declares 5 browser permissions.

• See the address and title of every tab you have open (tabs): 21% of extensions in this category ask for it.

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

18 users

• Last updated in the store 20 days ago, on 2026-10-16.
• We have seen 1 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.

1. 2026-10-16Asked for fewer permissions (6, was 7) (changed: site access, pages it runs its code on, browser permissions, optional site access)

Versions we have seen

1. 2026-10-16Version 26.10.1 · Asked for fewer permissions (6, was 7) (changed: site access, pages it runs its code on, browser permissions, optional site access)

Who publishes it

MattXDD10. This listing has been in the store since 2025-05-23 and was last updated on 2026-10-16.

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. ED Helper No permissions at all · No permissions declared 136 users ★ 5.0
2. LUH-Tools No site access · 3 permissions 286 users ★ 5.0
3. Canvas Grades Extension Access to specific sites only · 1 permission, 1 site pattern 20 users ★ 5.0

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 U-Cursedn't access?

Specific sites only: 1 match pattern. It declares 5 browser permissions.

What data does U-Cursedn't 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 U-Cursedn't asked for more permissions over time?

Its permissions changed once while we watched, on 2026-10-16.

Does U-Cursedn't publish a privacy policy?

No, the store listing does not link to a privacy policy.