One Click Image Save: Instant Image Download от wollomatic

One Click Image Save is a lightweight, privacy-friendly Firefox extension for downloading images directly from the context menu.

Right-click an image, select Save image, and the download starts immediately—without opening a file picker or Save As dialog.

Features
- Save images instantly from the Firefox context menu
- No tracking, telemetry, advertisements, or external services
- Configurable keyboard access key for the Save image menu entry
- Configurable target folder within your Firefox download directory
- Optional subfolders based on the website’s registered domain or full hostname
- Optional filename prefixes using the website domain and timestamp
- Configurable filename-conflict handling: create a unique filename, overwrite, or skip
- Optional automatic tab closing after the download starts
- Support for HTTP, HTTPS, and data:image/... image URLs
- Clear overview of saved settings with one-click deletion
- Fully open source

Firefox extensions can save downloaded files only within Firefox’s configured download directory. Custom subfolders are supported, but arbitrary absolute filesystem paths are not.

The extension uses Firefox’s standard image context menu. Images that websites do not expose as regular image elements may therefore not be available for saving.