Everything Frostbatch does to a folder of images
Frostbatch is a single-window macOS app for the boring half of image work: making many files the right size, the right format and the right name, all at once. Each page below covers one part of that in detail.
Batch resize
Set one width and height, choose whether images are fitted, filled or left at their own size, and write the whole folder in a single pass.
Read moreHEIC to JPG
Open the HEIC files an iPhone writes and get JPG, PNG, WebP, AVIF or TIFF back. No conversion step first, no Preview, no upload.
Read moreAI upscaling
Real-ESRGAN rebuilds detail at 4× before the resize, on your Mac’s GPU. Two models, one for photographs and one for flat art.
Read morePresets and bundles
56 presets across five categories, plus 11 bundles that write several sizes from one source in a single run.
Read moreWatch folders
Point Frostbatch at a folder and anything dropped into it is processed on arrival, with your current settings or a set saved for that folder.
Read moreCrop and rename
Draw a crop frame on a single image before the batch runs, and give the whole export a filename pattern built around the original name.
Read moreFive days free, then $9.99 once
The whole app for five days, no card and no account. After that it is a single purchase through the Mac App Store.