How to open CRAMFS files

Did your computer fail to open a CRAMFS file? We explain what CRAMFS files are and recommend software that we know can open or convert your CRAMFS files.

What is a CRAMFS file?

The CRAMFS file extension indicates to your device which app can open the file. However, different programs may use the CRAMFS file type for different types of data.

While we do not yet describe the CRAMFS file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about CRAMFS files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

Generic CRAMFS

These apps are known to open certain types of CRAMFS files. Since many different programs may use CRAMFS files for different purposes, you may need to try a few of the apps to open your specific CRAMFS file.

360360User submitted
Free Zip OpenerFree Zip OpenerUser submitted
Free Zip ViewerFree Zip ViewerUser submitted
GoUnzip Supporting ApplicationGoUnzip Supporting ApplicationUser submitted
GoUnzipGoUnzipUser submitted
EliteUnzip Supporting ApplicationEliteUnzip Supporting ApplicationUser submitted
DezipperDezipperUser submitted
EliteUnzipEliteUnzipUser submitted
Free Ultimate File OpenerFree Ultimate File OpenerUser submitted

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

We have not verified any programs that we know for certain can work with CRAMFS-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with CRAMFS-files. If you know one, please use the Suggest link below and tell us about it!