# JPEG XL viewer

> Displays JPEG XL images.

Canonical page: [https://chrome-stats.com/d/jxl](https://chrome-stats.com/d/jxl)

## Overview

- **ID:** `jxl`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** zamfofex
- **Daily users:** 751
- **Weekly downloads:** 11
- **Rating:** 4.06 / 5 (32 ratings)
- **Version:** 0.3.0
- **Last updated:** 2024-01-03
- **First published:** 2023-01-02
- **Size:** 394 KB
- **Data as of:** 2026-03-19
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jxl/)

## Description

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.

## Permissions and access

### Permissions

- `<all_urls>`
- `declarativeNetRequest`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension is not longer available in the store

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/jxl)