Large Image Blocker

Large Image Blocker

Block images exceeding a user defined file size.

What is Large Image Blocker?
Large Image Blocker is a simple Firefox add-on that allows users to block images exceeding a specific file size. It helps save bandwidth, increase performance, and save RAM. Blocked images are replaced with alternative text or broken image symbols. Note that images in the browser cache are not blocked. The add-on has a few known issues, such as affecting downloads and not working when the tab URL directly points to an image.
Merlin
Stats
By: Kai M.
Users: 24 ▲ 2
Rating: 5.00 (4)
Version: 0.3 (Last updated: 2022-01-30)
Creation date: 2019-11-12
Weekly download count: NaN
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • webRequest
  • webRequestBlocking
  • <all_urls>
  • storage
  • activeTab
  • tabs
Size: 15.51K
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Merlin
Summary

This is a simple extension that blocks images exceeding a user defined file size.

Large Image Blocker helps you to:

  • save bandwidth
  • increase performance
  • save ram

If an image is blocked you will see an alternative text defined in the HTML alt-attribute. If the alt-attribute is missing, you will see a broken image symbol. But there is no placeholder of the missing image at all if it is integrated as a background-image or has neither an alt-attribute nor HTML dimensions.

Note: Images that are already in the browser cache are not blocked.

Known issues:

  • Downloads ("save image as…") are affected, too.
  • Blocking does not work when the url of the tab is directly pointing to an image. So if you right-click on a blocked image and select "view image", it will be displayed as usual. (This seems to be an issue in the firefox extension api.)
  • The extension relies on the HTTP Content-Length header field. A few websites do not set this field so that blocking does not work there.
User reviews
It does what it says!
by Weirhelmer, 2023-04-15
View all user reviews
Safety
Risk impact

Large Image Blocker 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 Large Image Blocker if you trust the publisher.

Risk likelihood

Large Image Blocker has earned a fairly good reputation and likely can be trusted.

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Screenshots