# Save Image as Format

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

Canonical page: [https://chrome-stats.com/d/save-image-as-format](https://chrome-stats.com/d/save-image-as-format)

## Overview

- **ID:** `save-image-as-format`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Maria
- **Category:** download-management,photos-music-videos
- **Daily users:** 10
- **Weekly downloads:** 7
- **Version:** 1.0.0
- **Last updated:** 2026-05-28
- **First published:** 2026-05-25
- **Size:** 156 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/save-image-as-format/)
- **Website:** [https://github.com/theminji/SaveImageFormat](https://github.com/theminji/SaveImageFormat)

## Description

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

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
<ul><li>PNG</li><li>JPEG</li><li>WebP</li><li>GIF</li><li>AVIF</li><li>BMP</li></ul>
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 <code>image/avif</code> export.

## Rankings

- #34,047 — Overall
- #25 — format
- #184 — gif
- #208 — save

## Permissions and access

### Permissions

- `menus`
- `contextMenus`
- `downloads`
- `notifications`
- `<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 has low user count. Unpopular extensions may not be stable or safe.

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

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Source: [Chrome-Stats](https://chrome-stats.com/d/save-image-as-format)