Accessing External Storage

When an external device is inserted, like a SDcard or USBstick, the Ctrl+M file manager will automatically open it in a tab. To access your device later, open the file manager and navigate into the external storage directory and then open the device’s folder. In the file manager you can only open files or rename them.

You can copy files from external devices by going to file:///media/ and navigate into the device’s file tree and just right-click (or alt-click) the file you want to copy and select save link as... and then just save the file into your file shelf.

To save files from your file shelf to an external device navigate to file:///home/chronos/user/Downloads/ and right-click (or alt-click) the file you want to save and click save link as... and then just save the file to the external device’s directory.

Open Files Using Ctrl + O

To easily open a file just press Ctrl+O.

Then just navigate into the file shelf or into an external storage device and double-click the file you want to open.

This method currently only opens files into a tab.

Currently Supported File Types

The following file formats are supported on the cr48:

• .html, .htm
• Common image formats: .gif, .jpg, .jpeg, .webp, .png
• Some media types: .mp4, .m4v, .m4a, .mp3, .ogv, .ogm, .ogg, .oga, .webm, .wav
• .pdf files
• .txt files

If you see the "Unknown file type" message when you try to open a file, that means the file format isn't supported.

Supported External Devices

You can open and save files on external devices connected to your cr48. The following types of filesystems are supported:

• Ext2
• Ext3
• Ext4
• FAT
• VFAT
• UDF
• NTFS

You can also open files saved on these types of external devices:

• HFS Plus (read only)
• ISO 9660 (read only)

Tab Management

Pressing Ctrl + T Opens a New Tab

You can create lots of tabs.

Ctrl+1 through Ctrl+8 goes to the tab at the specified position in the window

Ctrl+9 goes to the last tab in the window

Ctrl+Tab goes to the next tab in the window

Ctrl + Forward button also goes to the next tab in the window.

Ctrl+Shift+Tab goes to the previous tab in the window.

Ctrl + Backward button also goes to the previous tab in the window.

Ctrl + W closes the current tab.

Window Management

Hold Ctrl and press N to open a new window.

You can create numerous windows.

Each window has its own set of tabs.


You can toggle between open windows by pressing the window selection button on the keyboard.

Or you can click the toggle button that’s in the top right corner of the screen.

Also Alt + Tab goes to the next window you have open.

And Alt + Shift + Tab goes to the previous window you have open.

Pressing Alt and numbers 1-8 goes to the window at the specified position.
Alt + 9 goes to the last window open.

Ctrl + Shift + N opens a new window in incognito mode.

Press Ctrl + Shift + W to close the current window.