SmartUpscale

Name: SmartUpscale
Rating: 4.7826 (23 reviews)
Author: Marat Tanalin

Conditional integer scaling for images on webpages: nonblurry Nearest Neighbour scaling at integer scales, regular blurry scaling at fractional scales. Useful with 4K/5K monitors at 200% OS-level zoom.

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Features & Capabilities

SmartUpscale is a Chrome extension designed to improve image clarity on high-resolution displays like 4K and 5K monitors, especially when using 200% OS-level zoom. It applies conditional integer scaling using a non-blurry Nearest Neighbour algorithm at integer scales, while applying regular scaling for fractional scales.

This extension ensures images do not become blurry by processing them once the page fully loads, upon dynamic page changes, and when you adjust the browser zoom level. Users can customize options such as the maximum image zoom level to prevent blurring and can also disable the blur prevention globally if desired. SmartUpscale is an essential tool for anyone seeking sharper images on high-DPI screens without compromising dynamic content or usability.

User Growth & Download Statistics

Add-on Developer Tools

By:

Daily users:

Rating:

Version:

1.4.1 Last updated: 2023-06-10

Version code:

5579078

Creation date:

2016-08-09

Risk:

Permissions:

storage

Content scripts matches:

<all_urls>

Size:

19.43KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-04

Compare stats and ranking:

Ranking

# 3,474 ▼ 13

Other rankings

#11 in smart tool keyword 10

#11 in smartbook keyword 1 ▲ 1

#16 in smartphone keyword 2 ▲ 1

#22 in smart keyword 28

#70 in level keyword 40 ▼ 3

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Other platforms

SmartUpscale (v1.5)

4,000 4.83

(12)

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Marat Tanalin

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/smart-upscale/

User Reviews

Users consistently praise SmartUpscale for eliminating Firefox’s blurry upscaling on HiDPI/4K screens, delivering crisper nearest‑neighbor scaling helpful for pixel art, icons, webtoons and videos. Many call it essential for 200% or other high-DPI setups. There are no widely repeated complaints across reviews.

Pros

Sharpens low-resolution images on HiDPI/4K displays, fixing blurry upscaling.
Removes Firefox's default blurry/bilinear scaling in favor of crisper (nearest‑neighbor) upscaling — good for pixel art and icons.
Works well at common HiDPI/system zooms (many users mention 200% and improved readability at high DPI).
Improves viewing of webtoons, YouTube and other small graphics by making images appear as true higher-resolution assets.

Cons

Recent reviews

by ra*****, 2025-09-16

by Ia*****, 2025-05-04

It doesn't do anything and They haven't Updated that addon since 2023. :-(

by eU*****, 2025-03-30

View all user reviews ›

Is SmartUpscale Safe?

Risk impact

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, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

SmartUpscale requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

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 Add-ons Store, 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.

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

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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