If your shell does not support here-strings, you can use a pipe ( |) with the echo command: echo "$myImgStr" | base64 -d > image2.jpg In this command, image2.jpg part of the command specifies that the output (the decoded image) should be saved as image2.jpg. If your shell supports here-strings (like Bash), you can use the following command: base64 -d image2.jpg Once you have a Base64 image string, you can decode it back into an image file using the base64 command with the -d option, which specifies that we want to decode the input. The base64 command is used to do the encoding. In this command, myImgStr is a variable where we will store the Base64 encoded string of the image image1.jpg. For example: myImgStr=$(base64 image1.jpg) To create a Base64 string from an image, you can use the base64 command followed by the name of the image file. Encoding an Image to Base64īefore we can decode a Base64 image string, we need to have one. This command is usually available by default on most Unix-based systems, including Linux distributions and macOS. To follow this guide, you will need a Unix-like operating system with a terminal that supports the base64 command. It is commonly used when there is a need to encode binary data, especially when that data needs to be sent over email or stored and retrieved from a database. Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. Before we dive into the decoding process, it’s important to understand what Base64 encoding is.
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