What is Base64 encoding?

Base64 is an encoding scheme that converts binary data into ASCII text using 64 printable characters. It is commonly used to embed images in HTML/CSS, transmit binary data in JSON, and encode email attachments.

How do I encode a file to Base64?

Click "Choose File" to select your file, then click "Upload File". The Base64 string will appear in the textarea. Click "Copy" to copy it to your clipboard.

How do I decode Base64 back to a file?

Paste your Base64 string into the textarea and click "Decode". If the content is an image, a preview will be shown below.

Is this Base64 tool free?

Yes, the Base64 encoder and decoder is completely free with no sign-up or login required.

Free Tool

Base64 Encoder & Decoder

Encode any file to a Base64 string or decode Base64 back to its original file. Free, no sign-up required.

Convert a File to Base64 and Decode Base64 to File

Base64 String

Choose File