What's supported on macOS
Input: JPG, PNG, WebP, BMP, TIFF, GIF. Output: WebP, JPG, PNG, AVIF, BMP, TIFF. HEIC from an iPhone is not supported in the desktop build yet; export from Photos as JPG first, or use the Android app.
Apple Silicon and Intel
Separate builds for each. Both are native; AVIF encoding is noticeably faster on Apple Silicon.
No ads, no network
The macOS build has no ads and makes no network requests.
Step by step
- 1
Install ConvertX for macOS
Download the .dmg for Apple Silicon or Intel from the download page and drag ConvertX to Applications.
- 2
Open Image Converter
On the Home screen, click Image Converter (or press ⌘O to pick files).
- 3
Add the images
Drag the files from Finder onto the window, or click "Select image files".
- 4
Choose the format and options
Pick the target format, an optional rename pattern with {name}, and the output folder.
- 5
Convert
Click "Convert N images" or press ⌘Enter. When it finishes, "Show in folder" opens the results in Finder.
Frequently asked questions
Why not Preview?
Preview exports one file at a time and offers no WebP or AVIF output.
Does it open HEIC on Mac?
Not in the current desktop build.
Is it notarised?
Check the download page for the current signing status of the macOS build.