See system requirements.
See also the Troubleshooting page.
If text and other UI elements appear tiny on your HiDPI display, then check the following:
- Double check that you are running the 64-bit version of Java.
- Verify that you are running Windows 10 (Windows 7 and 8 do not do HiDPI scaling).
- In ImageJ.exe › Properties › Compatibility, check the “Disable display scaling on high DPI settings” option. Try with it enabled, as well as disabled—some users have reported success only with this option off, and others only with it on.
Frequently Asked Questions
See the Frequently Asked Questions page.