WebP / Avif image converter

Name: WebP / Avif image converter
Rating: 3.8828 (128 reviews)
Author: Nullbrains

Convert WebP, Avif and other image types before saving and store them in an orderly fashion. All based on your preferences and fully automatic. Simply right click on an image and use the "Convert and save as" button. More details in the description.

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Features & Capabilities

WebP / Avif Image Converter is a versatile Chrome extension that lets you convert, download, and organize images from the web seamlessly. Simply right-click any image and use the "Convert and Save image as" option to automatically convert images (WebP, Avif, JPG, PNG) based on your personalized preferences.

Customize conversion types, specify download locations and filenames, and leverage advanced options like modifier keys for multiple actions, popup layout preferences, and incognito downloads to keep your workflow smooth and your downloads tidy. The extension intelligently detects actual image data to ensure accurate conversion and supports quality adjustment for WebP images on compatible browsers.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.3.1 Last updated: 2024-06-20

Version code:

5758672

Creation date:

2019-11-19

Risk:

Permissions:

Content scripts matches:

Size:

47.75KB

Email:

hi*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-06

Compare stats and ranking:

Ranking

# 548 ▲ 1

Other rankings

#37 in Download Management

#73 in Photos, Music & Videos

#7 in convert keyword 30

#29 in image keyword 74

#32 in hd image keyword 13

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Other platforms

WebP / Avif image converter (v1.3.2)

100,000 3.76

(225)

For Developers

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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:

Nullbrains

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/webp-image-converter/

Email:

hi*****@gmail.com

Permission Change History

2024-06-20: Version 1.2.10 → 1.3.1

Add Optional permissions: webRequest

User Reviews

Users find it a handy, time-saving tool for saving and converting WebP/AVIF images via right-click with flexible output options. It is generally praised, especially by artists, but reliability varies and some formats (AVIF, animated WebP) aren’t handled well. Download behavior can be flaky and there are site-specific compatibility issues (e.g., hitomi.la). Overall, strong utility with notable stability and format caveats.

Pros

Handy, time-saving tool for saving and converting images via right-click.
Flexible output options with support for multiple formats (e.g., PNG, JPEG) through extension settings.
Generally works well on supported Firefox versions and platforms.
Positive feedback from artists and power users who rely on quick image conversions.

Cons

Reliability and stability issues: reports of it no longer works or stopping unexpectedly on some setups/sites.
Format handling limitations: AVIF not converted reliably and animated WebP to GIF is not supported.
Download/save issues and limited user control: instances of empty downloads or inability to change the save path.
Site compatibility problems: some sites (e.g., hitomi.la) not supported or work poorly.

Recent reviews

Very good!

by Pr*****, 2026-06-30

by Ra*****, 2026-06-09

Crunches resolution of images something fierce, turned text from crisp to illegible

by Fi*****, 2025-11-25

View all user reviews ›

Is WebP / Avif image converter 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.

WebP / Avif image converter 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.

WebP / Avif image converter has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
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