SmartUpscale
Disables blur for images shown at integer zoom levels. Useful for 4K-monitor owners.
SmartUpscale - Enhance Image Quality on Firefox
SmartUpscale is a highly efficient Firefox extension designed to enhance the quality of images by eliminating blur when images are shown at integer zoom levels. Specifically useful for 4K or high-DPI monitor owners, the extension works by ensuring that images with an integer number of physical pixels larger than their natural size do not blur. It works once the page is fully loaded, after dynamic changes on the page, and on changing browser-level zoom. The extension's options also allow the limitation of the maximum image zoom where blur should be prevented and an option to disable blur globally if needed.
Add-on stats
Weekly download count: 16
Firefox on Android: No
Risk impact: Moderate risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- storage
Size: 19.90K
Ranking
Want to check extension ranking and stats more quickly for other Firefox add-ons?
Install
Chrome-Stats extension
to view Firefox-Stats data as you browse the Firefox Browser Add-ons.
Add-on summary
Prevents blurring images which have their size in physical pixels an integer number of times larger than their natural size.
The extension may be useful when using high-DPI monitors, including 4K monitors used at OS-level zoom of 200%.
Images are processed once the page is fully loaded, as well as after dynamic changes on the page and on changing browser-level zoom.
Extension’s options allow to limit maximum image zoom that blur should be prevented at, and to disable blur globally if needed.
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Essential for improving the clarity of images on high-resolution displays, particularly 4K monitors.
- Effectively sharpens pixel art and low-resolution images, eliminating blur from scaling.
- Supports fractional screen scale factors properly, ensuring correct image zoom at various DPI settings.
- Significantly enhances the viewing experience for webtoons and similar content at high zoom levels.
- Works well across various websites, fixing blurry graphics and providing clearer images.
Cons
- Lacks the ability to customize settings for specific websites, applying the same upscale effect across all pages.
- Some users desire more control over interpolation settings for different types of content.
Most mentioned
- Improves image sharpness and clarity on high-DPI screens.
- Fixes blurriness from default Firefox scaling methods for low-resolution images.
- Highly praised by users with 4K displays for enhancing their browsing experience.
User reviews
by zanixmechanix, 2025-01-21
by Firefox user 17347874, 2025-01-20
Should be preinstalled when installing firefox, just like transparent-standalone-image, and Ublock Origin
by IQman, 2024-10-08
Add-on safety
Risk impact
SmartUpscale requires a few sensitive permissions. Exercise caution before installing.
Risk likelihood
SmartUpscale has earned a fairly good reputation and likely can be trusted.
Upgrade to see risk analysis details