We don't think we've encountered many programs that are more versatile and intuitive than BatchPhoto.
There's always a compromise that needs to be made and in the case of graphic image formats is Quality vs Size.
If you want to preserve the image unaltered, with the best possible quality, JPG (or JPEG, the acronym for Joint Photographic Experts Group) is not the format to use. JPEG is a lossy image format that sacrifices image data in order to achieve much better compression (it can reduce file sizes to 5% of their normal size). Moreover with each consecutive save, the JPEG format will lose more image data.
So if quality is more important to you than size, opt to use a lossless format like TIFF (TIF) or PNG. The TIF and PNG image formats do not sacrifice image data for better compression and therefore don't lose quality with each consecutive save, but they have a larger file size than JPEG.
For websites we have three important formats that are each used for representing different types of images:
There are many other image formats with different uses, like:
Converting images from one format to another can be done with Adobe Photoshop® or more lightweight and specialized software like BatchPhoto from Bits&Coffee.
BatchPhoto is a specially designed image converter software for Windows® and Mac that can convert multiple images in one session as well as apply custom edits, touch-ups, and effects, all at the same time.
BatchPhoto makes it easy to convert images from one format to another. Really easy. And you can try it for free by installing the free trial version from below:
Processing @GoPro #timelapse photos today. I am using @BatchPhoto and highly recommend it. Processing 1000s of images at a time, works great
Convert images' format in batch mode by following a three step wizard!
Note: BatchPhoto works on Windows® 10, 8.1, 8, 7, Vista, and XP as well as macOS® (OS X) Big Sur (11), Catalina (10.15), Mojave (10.14), High Sierra (10.13), Sierra (10.12), El Capitan (10.11), Yosemite (10.10), Mavericks (10.9), Mountain Lion (10.8), and Lion (10.7).