JPEG XL viewer Firefox

JPEG XL viewer

Displays JPEG XL images.
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Features & Capabilities

The JPEG XL Viewer Chrome extension enables seamless viewing of JPEG XL images, a next-generation image format developed by Google and Cloudinary. It supports both lossy and lossless encodings, delivering smaller image sizes without sacrificing quality compared to existing browser formats.

Since JPEG XL is a new and not yet widely supported format, this extension allows web pages to load JPEG XL images normally without native browser support. Perfect for developers, photographers, and web users, JPEG XL Viewer brings cutting-edge image technology to your browser today.

Learn more about JPEG XL and access the extension's source code on GitHub for an open, efficient image viewing experience.

User Growth & Download Statistics

Manifest V2 Add-on Photography
By:
zamfofex
Daily users:
751
Rating:
4.06
(32)
Version:
0.3.0 Last updated: 2024-01-03
Version code:
5671780
Creation date:
2023-01-02
Risk:
Moderate risk impact High risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
393.94KB
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-03-19
Compare stats and ranking:

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:
zamfofex
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/jxl/

Permission Change History

2023-01-06: Version 0.1 → 0.2
Add Permissions: declarativeNetRequest

User Reviews

The add-on provides a needed Firefox workaround to view JPEG XL images in the absence of native support. Users largely agree it works and is a valuable stopgap, but it often converts JXL to PNG rather than preserving the original, struggles with animations, can break non-JXL images on some sites, requires JavaScript to run, and raises concerns about maintenance due to disappearing sources.
Pros
  • Provides a working JPEG XL viewer for Firefox as a workaround where native support is missing.
  • Does what it claims and is a useful solution until native support arrives.
  • Fills a gap created by Mozilla's removal of JPEG XL support and is praised as a helpful fix.
Cons
  • Often converts JPEG XL images to PNG instead of displaying the original, reducing the benefit of the format.
  • Lacks support for animations/JXL animation.
  • Can break or misrender non-JPEG-XL images on certain websites.
  • Requires JavaScript to be enabled (does not work with NoScript).
  • Source code repository/developer activity is uncertain or disappeared, raising maintenance and trust concerns (and Android compatibility is unclear).
Recent reviews
Technically fixes JPEG XL at the expense of breaking many normal JPGs :(
by Tr*****, 2026-02-21
Requires obscure and non-obvious configuration tuning. Without it, files are saved to disk instead. Transparency and animation do not work. Source not available.
by Fi*****, 2026-01-25
by wm*****, 2025-12-02
View all user reviews ›

Is JPEG XL viewer 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.

JPEG XL viewer 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.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.

JPEG XL viewer may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • Critical This extension is not longer available in the store
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