Enhance privacy by automatically deleting DOM storage/IndexedDB super-cookies

What is StoragErazor?

StoragErazor is a Firefox add-on by Miraculix. This add-on has 109 daily active users and a good user rating of 4.67. The latest version, 1.0, was updated 5 years ago.

Stats date:
Users: 109 ▲ 1
Rating: 4.67 (15)
Version: 1.0 (Last updated: 2017-10-01)
Creation date: 2017-10-01
Weekly download count: 4
Firefox on Android: Yes
Manifest version: 2
  • storage
  • notifications
  • browsingData
Size: 25.38K
URLs: Website
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Found a bug?

Other platforms

Not available on Chrome
Not available on Edge
StoragErazor automatically removes data stored in DOM Storage (local storage) and IndexedDB when the browser restarts. Some websites use these databases as super-cookies to track users. 

There is also a browser action icon with a menu which lets you erase these databases manually.

The addon does not touch the IndexedDB databases created by other addons, only those which were created by websites.

Firefox 57 (57.0b3 or higher)is required for this addon to work.

If you don't use Firefox 57 you can only delete IndexedDB super-cookies manually from the storage/ folder inside your Firefox profile folder.
Risk impact

StoragErazor requires very minimum permissions and is relatively safe to use.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

StoragErazor has earned a fairly good reputation and likely can be trusted.

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews
Clearing "Cookies and Site Data" in Firefox Settings left a long list of sites with "0" in the Cookies column, but non-zero "Storage." StoragErazor erased the Storage data (local storage) for all those sites.
by cattledogit, 2022-06-05

by atreyu, 2020-03-29

Useful addon, but i think that an exceptions list can be necessary
by JonnyOne, 2019-01-16
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