Save Image as Format

Name: Save Image as Format
Author: Maria

By: Maria Add-on

Convert an image locally in Firefox and download it as PNG, JPEG, WebP, GIF, AVIF, or BMP.

Overview

Firefox Add-ons Store

Daily users

2 ▼ 1

Data as of 2026-07-26

Version:

1.0.0

Last updated: 2026-05-28

Features & Capabilities

A Firefox WebExtension that adds an image context-menu item named Save image as format.

To use it, just right click on an image, and find the "Save image as format" button, and select the file type!

The conversion happens on your device in the extension background page, so no data is sent anywhere. The extension fetches the selected image, decodes it in Firefox, draws it to a canvas, converts it to the chosen output format, and starts a normal Firefox download prompt.

I (codex) made this extension because I was tired of downloading corrupted images, or having to use web converting sites and downloading the image multiple times, blah blah blah... so I came up with this to solve my problems!

Formats

PNG
JPEG
WebP
GIF
AVIF
BMP

JPEG, GIF, and BMP do not support full alpha transparency, so transparent pixels are flattened onto white (#FFFFFF).

Animated images are saved as the first decoded frame because browser canvas export is still-image based. GIF export creates a single-frame GIF. AVIF export uses Firefox's built-in canvas encoder and will show an error if the current Firefox build does not support image/avif export.

User Growth & Download Statistics

Add-on

By:

Maria

Daily users:

2 -1

Version:

1.0.0 Last updated: 2026-05-28

Version code:

6276496

Creation date:

2026-05-25

Risk:

Permissions:

Size:

156.05KB

Email:

ma*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 65,492 ▼ 10,877

Other rankings

#59 in format keyword 15 ▼ 13

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:

Maria

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/save-image-as-format/

Email:

ma*****@gmail.com

Website:

https://github.com/theminji/SaveImageFormat

Is Save Image as Format 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.

Save Image as Format 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.

Save Image as Format is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

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