🔐 How to put password on Mac folder. Three free ways

Encryption is the most reliable way to protect sensitive information. Encrypted files and folders cannot be opened and viewed without entering a password.

Now I will tell you about three ways how you can encrypt any photos, videos or documents:

  1. Creation of encrypted folders through macOS Disk Utility;
  2. Creation of an encrypted USB stick;
  3. Encrypt any files and folders using the Encrypto utility.

What is file encryption

Encryption is the transformation of a file using a specific algorithm. Such a file cannot be opened and viewed until you enter the decryption key. In our case, the key is a regular password that you come up with when encrypting the file.

1. How to put a password on a folder

You can encrypt folders using standard macOS tools. For this:

  1. Open up Программы ▸ Утилиты ▸ Дисковая утилита;
  2. Click on Файл ▸ Новый образ ▸ Образ из папки... and select the folder where you want to put the password;

Creating an encrypted image (folder) with macOS Disk Utility

  1. In the window that appears, specify the encryption algorithm 256 bit AESas well as the image format Read / write… The latter is necessary so that in the future you can add or remove files from the encrypted folder.

When you select an encryption algorithm, you will also be asked to enter a password.

Be sure to select “read / write” when creating the encrypted image. This way you can add new files to it.

  1. After a few seconds, an encrypted folder with a .dmg extension will appear next to the original folder. Double clicking on it will open a window for entering your password. And after entering, it will mount the folder on the Desktop in the form of an external drive.
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After entering the password, the encrypted image is mounted as an external drive

  1. To add new files to an encrypted folder – click on it, enter the password, and then drag the necessary files into it. After that, right-click on the image and then “Extract”.

You can add any files to the encrypted image

The advantage of this method is that encryption occurs through standard macOS functions, so you can easily open your files on any other computer.

Please note that the protected folder does not replace the original one. So don’t forget to delete the original and empty the trash. If you’re using a backup service like Time Machine, make sure you delete the unencrypted files there as well.


2. How to put a password on a USB flash drive

Sometimes you need to not only encrypt files, but also remove them away from your computer. In this case, it is more convenient to make an encrypted USB flash drive that will ask you to enter a password every time you connect to your Mac.

For this we also need Disk utility:

  1. Open up Программы ▸ Утилиты ▸ Дисковая утилита;
  2. Select your drive on the right and click Стереть;
  3. In section Format you take APFS (зашифрованный);
  4. Enter the password for encrypting the disk.

Create an encrypted USB stick with macOS Disk Utility

An encrypted flash drive works in the same way as a regular one, just every time you connect it to a computer, you will need to enter a password. If you accidentally lose such a flash drive, then no one can view the contents without a password.


3. How to put a password on a file or folder using Encrypto

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Encrypting files using Encrypto is more convenient than using Disk Utility.

To encrypt a file, you just need to drag it to the Encrypto window and set the desired password. Decryption occurs by double clicking on the file.

Drag information onto the Encrypto window to encrypt it
To decrypt the file, double-click on it and enter the password

The disadvantage of this method is that you need to install Encrypto to decrypt files on another computer. Fortunately, the application is free, there is a version for macOS and Windows.

👉 Download Encrypto, free

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