I don't think Firefox has a "save and open" option. When you call a "Save As..." command, it's just that. When the server pushes a download, you get an Open option but that uses the TEMP folder, you can't control where the file is saved.

I think for now, saving first, then clicking the download arrow and opening the image from the drop-down, is the most efficient workflow.

You can submit feature suggestions through one or more of the following links:

• Feedback: https://qsurvey.mozilla.com/s3/FirefoxInput/
• Reddit: https://www.reddit.com/r/firefox/
• Discourse: https://discourse.mozilla.org/c/firefox-development
• Twitter: https://twitter.com/firefox
• Facebook: https://www.facebook.com/Firefox

Thanks. That's helpful. So what does the Option / General / Applications choices do? I thought those settings would open files after they were downloaded, such as for pdfs. Or is that different from Saving As?

There are two cases where Firefox uses the Application settings for files you download/retrieve from the web (they were formerly called Download Handlers):

(1) The file is not a type of content that Firefox can display, such as a Word document

(2) The server indicates that the file must be downloaded instead of displayed in a tab (Content-Disposition: attachment)

When you use a Save [something] As... command, Firefox will ignore the Application settings and always save the file.