Step 1 - Create a new folder (titled JPG) for the newly converted JPG images.
Step 2 - Launch "Photoshop" and activate the "File" window menu, click Scripts > Image Processor
Step 3 - In the "Image Processor" box, find "select images to process", where you select the newly set up folder, and hit OK. You do not need to include all subfolders.
Step 4 - Choose to save the files in the "JPG" Folder.
Step 5 - Select JPG as the type of file you would like. As for the quality, the highest you can do is 12, which is the closest you can get to the original image. Try not to go past 6.
Step 6 - Select the most width or height you can do in the Resize Fit Section.
Step 7 - Click Run and wait until all images open, resize, and save as JPG. There will be no notification when it finishes, so keep an eye out for that.
If you have any more questions, please reach out to firstname.lastname@example.org