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Permissions and history

Is Mark this tab! safe to install?

Mark this tab! asks for 5 browser permissions and declares no blanket site access. We do not audit code and we do not judge intent; what we can show is what the listing declares and whether that has changed while we have been watching.

Mark this tab!

Chrome extension by Andrey Esin · Productivity · Workflow

Open in the Chrome Web Store
What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

At a glance

Facts, not a score: an ad blocker needs every page and a theme needs nothing, so one number would be wrong about both. Each fact links to its detail.

Site access
No site access
Data collection
1 kind of data declared
Publisher
No store badges
Audience
114 users · 4.8/5

What data it declares

The developer declares that it collects these kinds of 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:

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.

Worth knowing

Routine for an extension

How usual this is for its category

In Productivity · Workflow, 19% of extensions ask for access to every site. This one: No site access.

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

114 users

Users
-18 since 31.08
114-137 · 34 readings
  1. 2026-08-31132
  2. 2026-09-02129
  3. 2026-09-05131
  4. 2026-09-06134
  5. 2026-09-07136
  6. 2026-09-08135
  7. 2026-09-09137
  8. 2026-09-13135
  9. 2026-09-15133
  10. 2026-09-17130
  11. 2026-09-21132
  12. 2026-09-22131
  13. 2026-09-25133
  14. 2026-09-26136
  15. 2026-09-28135
  16. 2026-10-04130
  17. 2026-10-08128
  18. 2026-10-10127
  19. 2026-10-11126
  20. 2026-10-13127
  21. 2026-10-16132
  22. 2026-10-18134
  23. 2026-10-19133
  24. 2026-10-20134
  25. 2026-10-21132
  26. 2026-10-22135
  27. 2026-10-23134
  28. 2026-10-24132
  29. 2026-10-25126
  30. 2026-10-28123
  31. 2026-10-29119
  32. 2026-10-30118
  33. 2026-11-01114
  34. 2026-11-02114

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

Andrey Esin. This listing has been in the store since 2022-01-20 and was last updated on 2022-01-29.

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. quickToggleTab Runs its code on every site · 3 permissions 7 users
  2. Tab Ticker Group Highlighter No site access · 3 permissions 15 users
  3. Tab Markers Runs its code on every site · 4 permissions 17 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 Mark this tab! access?
No site access is declared in the manifest, so it cannot read the pages you open on its own. It declares 5 browser permissions.
What data does Mark this tab! collect?
The developer declares that it collects these kinds of data: Website content. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.
Has Mark this tab! asked for more permissions over time?
The permissions this extension requests have not changed since we started watching it.
Does Mark this tab! publish a privacy policy?
No, the store listing does not link to a privacy policy.

We read the public store listing up to 2 times a day and keep what it declared. We do not install the extension, do not audit its code, do not judge its intent and publish no contact details for its developer. Last read on 2026-11-02.

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