# Compress AVIF on your Mac, never uploaded.

> Compress AVIF on your Mac and keep the original when a copy is not lighter. Nothing is uploaded. The drop zone on this page takes JPEG, PNG and WebP.

- URL: https://meetsmally.com/compress-avif/
- Language: en
- Spanish version: https://meetsmally.com/es/comprimir-avif/
- Site map for assistants: https://meetsmally.com/llms.txt

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.

## 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.

## 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.

## 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 |

## Questions

- **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.

## More

- [Compress WebP](https://meetsmally.com/compress-webp/)
- [PNG to WebP](https://meetsmally.com/png-to-webp/)
- [Compress JPEG](https://meetsmally.com/compress-jpeg/)

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Smally in the browser. Smally for Mac 0.16.0 (build 35, beta) needs Apple silicon and macOS 26 or later; download: https://downloads.meetsmally.com/latest. Files are never uploaded. Source of truth: https://meetsmally.com/compress-avif/