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Permission · storage

What the storage permission means for a Chrome extension

Live Chrome Web Store extensions that declare storage: 196 203, which is 72% of the 270 859 whose permissions we have read. Counted after our catalog pass of 2026-10-10.

What it lets an extension do

Store data in your browser storage

Routine for an extension

Routine for an extension: on its own it does not reach your browsing data or the pages you open.

What Chrome says when you add one

We know of no install warning Chrome shows for this permission on its own. Chrome may still warn about the site access an extension declares alongside it.

How common it is in each category

How common it is in each category
CategoryShare of extensionsExtensions
Make Chrome Yours · Privacy83%4 543 of 5 449
Productivity · Communication83%5 890 of 7 120
Lifestyle · Shopping79%6 878 of 8 708
Lifestyle · Well Being79%2 271 of 2 878
Productivity · Education78%8 938 of 11 516
Productivity · Tools77%82 271 of 106 510
Productivity · Workflow76%34 648 of 45 721
Lifestyle · Social74%5 265 of 7 160
Lifestyle · Travel73%620 of 855
Lifestyle · Household72%356 of 493
Lifestyle · Entertainment71%4 499 of 6 363
Productivity · Developer68%19 135 of 28 348
Make Chrome Yours · Accessibility64%5 171 of 8 075
Lifestyle · News63%1 023 of 1 631
Make Chrome Yours · Functionality59%6 607 of 11 127
Lifestyle · Fun52%4 441 of 8 489
Lifestyle · Art37%1 312 of 3 519
Lifestyle · Games34%2 335 of 6 897

Counted over the live extensions of each 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.

Widely installed extensions that ask for it

  1. Adobe Acrobat: PDF edit, convert, sign tools Access to every site · 15 permissions, 1 site pattern 343.0M users ★ 4.4
  2. 迅雷下载支持 Access to every site · 9 permissions, 3 site patterns 80.0M users ★ 2.9
  3. AdBlock — block ads across the web Access to every site · 11 permissions, 1 site pattern 65.0M users ★ 4.5
  4. Grammarly: AI Writing Assistant and Grammar Checker App Access to every site · 7 permissions, 2 site patterns 41.0M users ★ 4.5
  5. Adblock Plus - free ad blocker Access to every site · 10 permissions, 1 site pattern 40.0M users ★ 4.4
  6. Google Translate No site access · 5 permissions 38.0M users ★ 4.2
  7. uBlock Origin Lite Access to every site · 8 permissions, 1 site pattern 21.0M users ★ 4.5
  8. 360 Internet Protection Access to every site · 9 permissions, 1 site pattern 19.0M users ★ 4.5
  9. Read&Write for Google Chrome™ Access to every site · 13 permissions, 1 site pattern 19.0M users ★ 3.4
  10. Kami for Google Chrome™ Access to every site · 9 permissions, 1 site pattern 18.0M users ★ 4.6

Each links to what that extension can access and how its permissions have changed.

How to check your own extensions

  1. Type chrome://extensions in the address bar and find the extension in the list.
  2. Open its details. The Permissions section lists what Chrome granted it, in Chrome's own words.
  3. 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.
  4. To uninstall it, choose Remove on the same page.

Other permissions

Figures come from the public Chrome Web Store, which our own crawler reads up to 2 times a day. We do not install or audit extensions and publish no contact details for their developers. Catalog pass of .

Browse the catalog

Where the data comes from: how the catalog is built