ExtensionSunset

The unlimitedStorage permission

Chrome extension permission · by Alex · checked

An extension holding unlimitedStorage can store an unlimited amount of data in your browser instead of the usual quota.

We give it no weight when scoring how much an extension can reach: on its own it exposes nothing about you.

Extensions we track using it
2,841
Share of those we have checked
4.2%
Risk weight
0/100

Who asks for it

Out of the 67,225 extensions we have examined, 2,841 declare this permission. These are the largest of them by user count.

ExtensionPlatformUsersReach
AdBlock — block ads across the web Manifest V3 61M 70
Adblock Plus - free ad blocker Manifest V3 38M 70
uBlock Origin Lite Manifest V3 18M 62
VPN for Chrome: NordVPN proxy protection Manifest V3 14M 100
Tampermonkey Manifest V3 12M 100
Malwarebytes Browser Guard Manifest V3 11M 100
Online Security Manifest V3 11M 100
Avira Browser Safety Manifest V3 7M 100
Zoom Chrome Extension Manifest V3 7M 8
Screencastify - Screen Video Recorder Manifest V3 7M 77
Bitwarden Password Manager Manifest V3 7M 95
Google Keep Chrome Extension Manifest V3 7M 31
AnyDoc Translator - Translate Web and PDF Manifest V3 6M 95
Sider: Chat with all AI: GPT-5, Claude, DeepSeek, Gemini, Grok Manifest V3 5M 97
Shazam: Find song names from your browser Manifest V3 5M 12
Custom Cursor for Chrome™ Manifest V3 5M 40
Awesome Screen Recorder & Screenshot Manifest V3 4M 100
Coupert - Automatic Coupon Finder & Cashback Manifest V3 3M 89
Ad Blocker: Stands AdBlocker Manifest V3 3M 45
SponsorBlock for YouTube - Skip Sponsorships Manifest V3 2M 14
WA Web Plus by Elbruz Technologies Manifest V3 2M 14
OneTab Manifest V3 2M 15
Momentum Manifest V3 2M 0
Volume Booster Manifest V3 2M 42
Free VPN For Chrome - VPN Extension - Windscribe Manifest V3 2M 100

Counts are of extensions we have checked ourselves, not of the whole Chrome Web Store. Chrome's own reference for developers: developer.chrome.com. How we weight permissions