SmallyLittle bird. Lighter files.

AVIF compressor · on your Mac

Compress AVIF on your Mac, never uploaded.

AVIF is already a compact format, so the real question is whether a lighter copy exists. Smally for Mac checks, and keeps your original when it does not.

Smally in the browser needs JavaScript and a current Safari, Chrome, Edge or Firefox. If it doesn't start here, Smally for Mac compresses images, PDFs and videos: meetsmally.com.

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

  1. Drag your file in. Drop your file on the drop zone above, or choose it with the file picker. Nothing is uploaded.
  2. 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 %.
  3. 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

Smally in the browser and Smally for Mac, side by side, for this kind of file
This kind of fileSmally in the browserSmally for Mac
What it takesNot AVIF: the row says Smally for Mac takes it, and nothing is uploadedAVIF, images up to 200 MB
What it makesNothing: the browser version has no AVIF encoderOne lighter AVIF copy, made at a fixed setting
What staysThe file, untouchedThe original; Save puts the copy next to it
Per batchUp to 5 files at a time, 50 MB each, with Download All as one zipUp to 50 files at a time
Where it is processedIn this tab, on your device. Nothing is uploadedOn your Mac. Nothing is uploaded
When the original is keptAlways: nothing is made from an AVIF hereA 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

Is my AVIF uploaded anywhere?

No. Smally for Mac compresses on your Mac, and your files never leave it. The browser drop zone does not take AVIF.

Can I compress an AVIF in the browser?

No. Smally in the browser takes JPEG, PNG and WebP. Smally for Mac takes AVIF, on your Mac.

Why did my AVIF stay the same?

A copy has to be at least 1% lighter than the original. When it would not be, Smally keeps the original and the row says Already small.

Does Smally replace my AVIF?

No. Save puts the lighter copy next to the original and never replaces it or any file already there.

What does the browser version count?

How many times its engine starts, how many times it fails and with which error code, and which Smally for Mac links are clicked, by day. Each count is just a number: no cookie, no ID, and nothing that identifies you or your files. Your files never leave this tab.

That record is stored with the time it happened and, within two days, added into a total for the day and deleted. Our hosting provider keeps ordinary server logs, as any host does; those are separate from these counts.