Flip or Rotate Image is a Firefox, Thunderbird and SeaMonkey extension designed mainly for when you're previewing individual photos directly from a directory listing or in webmail attachments before their orientation has been corrected, or for practical jokes.
This doesn't allow saving the flipped or rotated images, it's just a workaround for bug 717810.
No restart required!
How to Install in Thunderbird:
1. Right-click the link below and choose "Save Link As..." to download and save the file to your hard disk.
2. In Mozilla Thunderbird, open Add-ons from the Tools menu.
3. Click the Install button, and locate/select the file you downloaded and click "OK".
· Mozilla Thunderbird
What's New in This Release: [ read full changelog ]
· Workaround added for Firefox 17 to make the context submenus appear for images in standalone tabs (you may need to switch away from the tab then switch back to it if they aren't initially visible). See bug 800965.
· Note: while the workarond is in place they'll appear at the top of the context menu in standalone tabs instead of the bottom like they do for images in normal web pages.