LocalStorage Editor

LocalStorage Editor

Add, edit, copy, remove, export and import local- and session- storage data

LocalStorage Editor promo image
What is LocalStorage Editor?

LocalStorage Editor is a Firefox add-on that allows you to add, edit, copy, remove, export, and import local- and session-storage data. It provides a user-friendly interface for modifying storage on websites.

Users: 361 ▲ 7
Rating: 5.00 (6)
Version: 1.3.15 (Last updated: 2024-01-11)
Creation date: 2022-10-27
Weekly download count: 31
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
  • clipboardRead
  • clipboardWrite
  • <all_urls>
Size: 132.99K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Add, edit, copy, remove, export and import local- and session- storage data

Short Demo Video:



  1. install the addon
  2. open the website where you want to modify the storage
  3. click the toolbar icon
  4. do stuff
  1. Can/Should i trust this addon? You can view the source code by either visiting the Homepage/Support Site or just saving/downloading the XPI (which is really just a ZIP Archive) and then extract it locally. The Sources in the XPI should be unofuscated and unminified (HTML,CSS and JS), so it's as easy to read as possible. Alternatives you can also use the CRX Viewer Extension by Rob W to inspect the XPI sources. If you have an questions, you can also open an issue on the support site and i'll try and answer to the best of my abilities. If you are no programmer and are still feeling unsure, you might want to visit one of the official or unoffical mozilla communities and ask if someone there with more knowlege can take a look. Examples: https://reddit.com/r/firefox , https://lemmy.world/c/firefox or https://chat.mozilla.org/#/room/#addons:mozilla.org
  2. Permissions: This add-on tries to use the minimal number of required permissions to successfully fullfill its intended purpose. If you think this could be improved please let me know by opening an issue and i will try to look into it.
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User reviews
Great for migration testing from one local storage structure to another. Very labour saving, thanks
View all user reviews
Risk impact

LocalStorage Editor is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install LocalStorage Editor if you trust the publisher.

Risk likelihood

LocalStorage Editor is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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