Convert JPEG 2000 to PNG on Mac
Select the JPEG 2000 files in Finder, press ⌥ F, choose PNG and press Return. FileFlip saves each PNG next to its original and works without an internet connection.
How to convert JPEG 2000 to PNG with FileFlip
Select the JPEG 2000 files
In Finder or on the Desktop. One file, or a whole folder with ⌘ A.
Press ⌥ F
FileFlip opens next to the selection and lists the formats it can make from JPEG 2000. Type “PNG” to jump to it.
Choose PNG and press Return
The PNG files appear next to the originals with the same names. The JPEG 2000 files stay as they are.
JPEG 2000 and PNG
JPEG 2000 is rarely supported outside specialist software. PNG keeps every pixel and supports transparency, which is what you want for screenshots, graphics and further editing.
What changes when you convert
- PNG is lossless, so the image is saved without further loss.
| Property | JPEG 2000 | PNG |
|---|---|---|
| Full name | JPEG 2000 | Portable Network Graphics |
| Made by | Joint Photographic Experts Group | PNG Development Group |
| Introduced | 2000 | 1996 |
| Compression | Lossy or lossless (wavelet) | Lossless |
| Transparency | Yes | Yes |
| Best for | Archiving and professional imaging | Screenshots, logos, graphics and images with text or transparency |
| Opens in | Preview and professional imaging tools; most browsers and many apps don’t open it | Everywhere, including every web browser |
| File extension | .jp2 | .png |
| In FileFlip | Opens and saves | Opens and saves |
Other ways on a Mac
For one file now and then you may not need FileFlip. These work with what’s already on your Mac.
Preview
Open the JPEG 2000 in Preview, choose File → Export, pick PNG from the Format menu and click Save. For several files, open them together, select all thumbnails in the sidebar and choose File → Export Selected Images.
Good for a few files now and then.
Terminal
The sips command converts images in place or into a new file.
sips -s format png image.jp2 \
--out image.pngBuilt into macOS and good for scripts. Run sips --formats to see what your macOS version can read and write.
Questions about JPEG 2000 and PNG
Does converting JPEG 2000 to PNG lose quality?
PNG is lossless, so the image is saved without further loss.
Can I convert many JPEG 2000 files at once?
Yes. Select them all in Finder, press ⌥ F and choose PNG. Progress moves to the menu bar, so you can close the panel and keep working.
Where is the PNG file saved?
Next to the original, with the same name and the .png extension. The JPEG 2000 file isn’t changed. In Settings you can choose a different folder instead.
Can I convert PNG back to JPEG 2000?
Yes, FileFlip converts PNG to JPEG 2000 as well.
Are my files uploaded anywhere?
No. FileFlip converts files on your Mac and works with the internet turned off.
Convert a whole folder of images at once
FileFlip also handles video, audio, PDFs, documents and data files. Requires macOS 14 Sonoma or later.
Coming soon for Mac