Holy cow is it slow. To convert a folder of large jpegs (2 to 4mb each) - say 100 or so images - it takes about 15 minutes on my 2016 i7 MacBook Pro. I clocked it at 8-9 seconds per image.The interface needs a little work, as well; it is barely functional. Loading the images into the interface is so slow you think something might be wrong, and just when you are ready to try it again, it starts working.You can’t selec the output folder until after you press start. Confusing at best.

The app works well, but does not keep the dates of the original photos. If batch processing a photo library all photos would have the date of the conversion, not when the photo was taken.

This review is for version 1.3, works really well, no crashes even on large directories. 2 feature requests: 1) I would like it to be able to recurse directories. If I have a folder with many sub-folders I’d like it to convert all the way down, and then replace the original files all together (move the JPGs to the trash). and 2) I don’t think it is honoring the rotation orientation flag in EXIF. Files taken in portrait are showing up rotated in preview.

The first of its kind, this app converts to the new HEIF format pictures you already have.Unfortunately the app doesn’t take TIFF images as input (very common format for Macs) and each time you start the conversion process you need to specify again the destination location. Moreover there is no help, only a link to a support page.It does what Apple still doesn’t allow (Preview doesn’t convert images to HEIF!, Photos doesn’t import pics and allows you to convert them to HEIF in the process!) and does it well - but there is room for improvement - looking forward to future releases of this very helpful utility.Update: unfortunately the app cannot process mor than 4-5 images in a batch - I need to force quit it and restart it. If I need to convert e.g 30 photos, this means restarting the app 5-6 times. Putting less pics in the queue doesn’t help.Pity, I hope in an update that fixes it.