Some websites may embed images via an iframe with an HTML page and not embed the image directly.

You can check this in the Inspector via the right-click context menu (Inspect) to see what element comes up.

• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/examine_and_edit_html/

Alternately, you can try to save the image via "Tools -> Page Info -> Media".

• https://support.mozilla.org/en-US/kb/firefox-page-info-window

Did you change browser.altClickSave to true in about:config? It only works with simple image links.

The extension Save Image to Downloads is extremely minimalist and clean, requiring few permissions and is not exposed to web content. You can disable automatic updates for it if you don't feel comfortable trusting the developer.

Did you change browser.altClickSave to true in about:config? It only works with simple image links. The extension Save Image to Downloads is extremely minimalist and clean, requiring few permissions and is not exposed to web content. You can disable automatic updates for it if you don't feel comfortable trusting the developer.

Yes i did set browser.altClickSave to true. I went with the extension, i downloaded it and reviewed it's code, it looks safe, thanks for the (disable automatic updates) idea.