Rotate JPEG images without losing any quality

To rotate, select a photo thumbnail and select the appropriate rotation angle you want to use, using the tools at the top of the interface. Apart from that, there are only a few other options such as "Recent Folder" which opens the folder that was opened before the program window was closed last time, "Favorites" which adds and keeps the 10 last chosen shortcuts to folders. There's also an "Automatic" feature which automatically rotates slanted images to make them straight.

It's hard to tell with the naked eye whether JPEG Lossless Rotator really rotates without a loss of quality but if you can't afford to take chances, it's better than using a standard image rotation tool.