Kompressor vs XnConvert
XnConvert is a powerful batch converter with more than 80 actions. Kompressor is a simple Mac app with a live preview. This is how they differ and when to use which.
The short answer
XnConvert can do much more than Kompressor: watermarks, crops, color changes and filters, on Windows, Mac and Linux. Kompressor does one job, to convert, compress and resize images on a Mac, and it makes that job fast and simple.
Comparison
| Kompressor | XnConvert | |
|---|---|---|
| Price | $14.99 one-time, 3 free conversions | Free for private use, from €15 for companies |
| Systems | macOS 14 or later (macOS 13 from the Mac App Store) | Windows, Mac, Linux |
| Input formats | More than 50 | More than 500 |
| Output formats | More than 20 | About 70 |
| Batch conversion | Yes, files and folders | Yes, files and folders |
| Actions | Convert, compress, resize, remove metadata | More than 80, such as crop, watermark, filters |
| Presets and watch folders | No | Yes |
What XnConvert does well
XnConvert is a tool for image pipelines. You build a list of actions, for example resize, add a watermark and sharpen, save it as a preset and apply it to thousands of files. It can watch a folder and process new images automatically. It reads more than 500 formats, among them many old and rare ones. For private use it is free.
When Kompressor is the better tool
- You want a result, not a pipeline. Drop the images, select a format, press play. There is nothing to configure first.
- The file size is important. Kompressor shows the original next to the compressed result with the real file size before you convert, so you find the correct quality at once.
- You want a Mac app. Kompressor is made only for macOS, with drag and drop, the Services menu and the look of a Mac app.
- You use it at work. XnConvert needs a paid license for use in a company. The Kompressor license costs about the same and is a one-time payment.
Facts about other apps are from their official websites, as of November 2026.
Kompressor in short
Kompressor is an image converter and compressor for Mac (macOS 14 or later, or macOS 13 or later from the Mac App Store). It reads more than 50 formats, among them HEIC, WebP, AVIF and camera RAW, and writes more than 20, among them JPEG, PNG, WebP, AVIF and HEIC. It converts files and whole folders with drag and drop, shows the result and its file size before you convert, and works offline with no analytics. You get 3 free conversions with as many images as you want. A license is a one-time payment of $14.99.