.C9R File Extension

A .C9R file is a Cryptomator Encrypted Data, created by Skymatic.

Open with Skymatic Cryptomator. Available for Linux, Windows, and Mac.

What is a .C9R file?

A .C9R file is a special kind of file that has been locked up to keep its contents safe. This is done using a program called Skymatic Cryptomator, which is a tool anyone can use for free to protect their files. When you put a file or a whole folder into a Cryptomator vault, it gets turned into a .C9R file. This means that the information inside is scrambled up so that no one can see it unless they have the key to unlock it.

To get back to your original file or folder, you need to open the vault where the .C9R file is kept. This is like unlocking a safe where your valuable information is stored. Once the vault is unlocked, the .C9R file is decrypted, which means it is turned back into its original form so you can use it again.

You can open .C9R files using the Skymatic Cryptomator program on different devices. If you are using a computer, you can download and install Skymatic Cryptomator. If you are on a mobile device, like a phone or tablet, you can find the Cryptomator app in the app store for both iOS (for iPhones and iPads) and Android devices. This means you can lock and unlock your files not just on your computer, but also when you're on the go with your mobile devices.


Our goal is to help people find the most up-to-date information about file extensions for Windows, Mac, Linux, Android and iOS. We researched over 10,000 file extensions and their respective programs that open those files. If you want to suggest edits or updates about .C9R file formats, example files, or programs that are compatible. Please contact us.

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