Cyberduck - How to install and upload a file


Installing Cyberduck

Cyberduck is a third-party software that has integrated with B2 cloud storage.

You can download Cyberduck from their webpage here:

Pick the appropriate platform and download the installer.

When the installer download is complete, run the installer.


Once Cyberduck is installed, you will need a couple of pieces of information from B2 before you can continue with setting up a B2 Connection with Cyberduck.

You will need the Application Keyand the Application Key ID from the B2 section of Backblaze.

To get this information you will need to go here:

Type your email address and password used for B2, then click Sign In.

Once you have signed in, click the App Keys link, in the left-hand navigation pane.

Then you will need to either use your Master Application Key or create a new App Key as shown here:


Clicking this link will bring up a screen where your Key ID and Application Key are listed.


Keep this window open, or paste the info to someplace where you can access the Key ID and Application Key for setting up Cyberduck. 


Setting up Cyberduck to use B2

Open Cyberduck and then click the open connection icon.



Click the drop-down field that reads, "FTP (File Transfer Protocol)" and select Backblaze B2 Cloud Storage.


Type in or paste your Key ID and Application Key, which we got earlier,  into the appropriate fields and click the connect button.



Uploading a file

Before uploading a file, you will need to create a bucket to place the file in.

Click Action, then choose New Folder from the menu.


Choose a bucket name and choose whether you would like the bucket to be private or public.  Public allows for viewing or downloading the data via a link.

Note: Bucket names are globally unique, so if at first it fails please alter the name and try once more.

Once the bucket has been created it will show in the Cyberduck window.

Now just drag a file to the bucket name and it will be uploaded.


Once you drag the file to the folder and release it the upload windows will pop up and tell you the rate and give you a progress bar.



Recommended Connection Settings

Increasing the automatic retry settings is recommende to help prevent issues when uploading large files, by automatically retrying the transfer multiple times.  Likewise, increaseing the timeouts also help to overcome temporary issues in Internet connections automatically.

Larger files are transmitted in multiple parts, and if one part fails, the whole transfer fails.  By changing this setting, if something causes a part to fail, it will be retried, instead of failing. 


To make the changes in Cyberduck, go to the Edit menu, and then select Preferences.



Go to the Connection Tab and change the following settings:

  • Timeout for opening connections:  60 seconds
  • Make sure ‘Repeat failed networking tasks” is checked
  • Delay seconds:  10
  • Number of retries: 20



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  • 0

    Thanks for the clear instructions, it worked smoothly the first time! I haven't yet tried, but hope I can drag multiple files at a time.  

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