This tool can repair corrupt JPEG headers and fix invalid JPEG markers to recover damaged JPEG files.

You need to provide a reference file that is a known good JPEG, shot with the same camera, and the same settings as the corrupt files. All you have to do is simply place the reference or sample file into the folder that contains the broken files and name it as 'sample.jpg'. It's important to work on copies of the corrupt files to avoid any unexpected data loss.
JPGRepair performs a series of actions to repair the damaged files effectively. Firstly, it extracts the header of the sample file, followed by processing it. It then examines the broken file to detect the jpeg image data. Finally, the software merges the recovered header with the image data, giving you a healthy image file.
In summary, JPGRepair is a reliable software tool that can help you fix corrupt JPEG files, saving you time and effort. Its user-friendly interface allows even beginners to operate it without any hassle. So, if you have a bunch of corrupt JPEG files, give JPGRepair a try!
Version 1.4.73: Several improvements and fixes. Free version allows file save again.
Version 1.4.64: Added JPEG bitstream editor/patcher
Version 1.4.1: Squashed bugs, improvements and added features
Version 1.2.9: Bug fixes, interface reworked