Base64 File Encoder

What is Base64 File Encoder?

A file-to-base64 encoder that converts any file into a base64-encoded text string. Useful for embedding files in JSON, HTML, CSS, or transferring binary data through text-only channels.

How to use

1. Upload or drag-and-drop any file (images, documents, audio, etc.) into the encoder.
2. View the generated base64 string along with the file size, MIME type, and data URI format.
3. Copy the base64 string or data URI to your clipboard, or download it as a text file.

Result

A developer needs to embed a small icon directly in a CSS stylesheet. They upload a 2KB favicon.png and copy the generated data URI to use as a background-image value.

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