Is GPTZero: AI Detection & Writing Replay safe to install?

What data it declares

The developer declares that it collects these kinds of data:

• Personally identifiable information such as name, address, email address or age
• Financial and payment information such as transactions, card numbers or credit history
• Authentication information such as passwords, credentials or PIN codes

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
• 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

Every site you visit. This extension can read and change the content of any page you open. What access to every site means

Reaches your browsing data or every site

• Read and change cookies on the sites it can access cookies
• 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

• Schedule work to run later alarms
• Add items to the right-click menu contextMenus
• Store data in your browser storage

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
• https://chatgpt.com/* only chatgpt.com
• https://docs.google.com/document/* only docs.google.com

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: 8 site patterns.

• https://app.gptzero.me/* only app.gptzero.me
• https://staging-app.gptzero.me/* only staging-app.gptzero.me
• https://pukka-app.gptzero.me/* only pukka-app.gptzero.me

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 · Education, 17% of extensions ask for access to every site. This one: Access to every site.

The typical extension there declares 3 browser permissions; this one declares 6 browser permissions.

• Read and change cookies on the sites it can access (cookies): 4% of extensions in this category ask for it.
• 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

500k users

• Last updated in the store 1 day ago, on 2026-11-11.
• We have seen 11 new versions in the last 90 days.

What the store shows

• Featured The store's badge for extensions that follow its recommended practices for Chrome extensions.
• Established publisher The store's badge for publishers with a good record and no history of violations.
• Trader The publisher has declared itself a trader under EU rules.

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. 2026-11-12Asked for fewer permissions (16, was 17) (changed: site access, sites that can connect to it)
2. 2026-10-27Changed where it works (changed: sites that can connect to it)
3. 2026-10-14Asked for more permissions (17, was 15) (changed: site access)

Versions we have seen

1. 2026-11-12Version 2026.11.3 · Asked for fewer permissions (16, was 17) (changed: site access, sites that can connect to it)
2. 2026-11-10Version 2026.11.2
3. 2026-11-06Version 2026.11.1
4. 2026-11-04Version 2026.11.0
5. 2026-10-30Version 2026.10.9
6. 2026-10-29Version 2026.10.8
7. 2026-10-27Version 2026.10.6 · Changed where it works (changed: sites that can connect to it)
8. 2026-10-23Version 2026.10.5

Who publishes it

chrome-extension-publisher. This listing has been in the store since 2023-05-03 and was last updated on 2026-11-11.

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. WriteHuman - History Replay for Google Docs No site access · 1 permission 10k users ★ 4.1
2. Passed.ai Extension No site access · 2 permissions 1k users ★ 3.0
3. AI Checker for Teachers No site access · 4 permissions 1k 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 GPTZero: AI Detection & Writing Replay access?

Every site you visit. This extension can read and change the content of any page you open. It declares 6 browser permissions.

What data does GPTZero: AI Detection & Writing Replay collect?

The developer declares that it collects these kinds of data: Personally identifiable information, Financial and payment information, Authentication information. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

Has GPTZero: AI Detection & Writing Replay asked for more permissions over time?

Its permissions changed 3 times while we watched, most recently on 2026-11-12.

Does GPTZero: AI Detection & Writing Replay publish a privacy policy?

Yes, the store listing links to a privacy policy.