The drop zone above takes JPEG, PNG and WebP in this tab. If you drop an AVIF there, nothing is uploaded: the row tells you that Smally for Mac takes AVIF.
What Smally for Mac does with an AVIF
Smally for Mac opens AVIF files and makes one lighter AVIF copy of each. There is no quality setting to pick: the copy is made at a fixed setting and compared with its original before it is offered.
A copy is kept only when it is at least 1% lighter than the original. Otherwise Smally keeps your original, and the row says Already small.
When keeping the original is the right answer
AVIF is a newer format than JPEG and WebP, and a file saved as AVIF has often been through an efficient encoder already. Another pass may save only a few bytes, so for many AVIF files the honest result is no new copy. That is not a failure: Smally keeps the original instead of handing you a file that is barely lighter.
An AVIF saved at a generous quality setting is more likely to get lighter. On one test file in our own checks an AVIF went from 315 KB to 114 KB; yours will differ, and Smally promises no size.
What stays the same
- Your original. Smally never changes it; Save puts the copy next to it, named like photo-smally.avif.
- Your privacy. Smally for Mac works on your Mac, and your files are never uploaded.
- Your choice. Press Preview to compare the copy with the original before you keep it.
Limits and the browser
Smally for Mac takes images up to 200 MB, most of them up to 40 megapixels, and up to 50 files at a time.
The browser version has no AVIF encoder, so it does not make AVIF copies. It takes JPEG, PNG and WebP.
How it works
- Drag your file in. Drop your file on the drop zone above, or choose it with the file picker. Nothing is uploaded.
- Compare the original and the copy. Press Preview on the finished row, drag the divider between the original and the copy, and look at it at 100 % or 200 %.
- Download the lighter copy. Download the copy you like. Your original stays untouched, and a copy is offered only when it is lighter.
Quick facts
| This kind of file | Smally in the browser | Smally for Mac |
|---|---|---|
| What it takes | Not AVIF: the row says Smally for Mac takes it, and nothing is uploaded | AVIF, images up to 200 MB |
| What it makes | Nothing: the browser version has no AVIF encoder | One lighter AVIF copy, made at a fixed setting |
| What stays | The file, untouched | The original; Save puts the copy next to it |
| Per batch | Up to 5 files at a time, 50 MB each, with Download All as one zip | Up to 50 files at a time |
| Where it is processed | In this tab, on your device. Nothing is uploaded | On your Mac. Nothing is uploaded |
| When the original is kept | Always: nothing is made from an AVIF here | A copy would not be at least 1% lighter |
Need PDFs, videos or photos bigger than the browser takes? Smally for Mac does them on your Mac. Compress PDF

