.J2K File Format
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| File Description | J2K, just as its name tells, is a JPEG 2000 image file. Rather than the standard DCT compression, J2K uses wavelet compression, which supports 16-bit color, alpha transparency, and lossless compression. |
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| How to Open .J2K Files |
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| J2K Programs | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| J2K Topics | File Extensions J2K Frequently Asked Questions None. |
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| Related Books | The Digital Photography Book | The Absolute Beginner's Guide to Taking Photos |
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| Source |  - Official File Extension Library | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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When you double click J2K files on computer, the associated program will be launched to open the selected J2K file. But you can change it to any program at your pleasure. a) Select a program to open J2K files on WindowsRight-click on the J2K file and go through 'Open with' > 'Choose default program'. In the pop-up windows, choose a program as the J2K file opener. If you decide to always open J2K files with the program, only check the option 'Always use the selected program to open this kind of file'.
b) Select another application to open J2K files on MacFirst Get Info about any one of J2K files by right-clicking or Command-I, and click 'Open with' arrow to choose a program to start your J2K file. Click 'Change All' button to set the selected application as the default J2K file opener app.
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How to select a program to open J2K files?
