File to Base64 Converter

Encode images, documents, or any file into Base64 or Data URI format securely.

Drag and drop a file here, or click to select

Supports image, doc, video files up to 20MB

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Drag and drop or upload a file to begin encoding.

File to Base64 Converter Online - Encode Files to Base64 String

Convert images, PDFs, ZIP archives, audios, and video files into Base64 encoded strings or Data URIs. Safe client-side local conversion. 100% offline.

Key Features

All Formats Supported: Convert PNG, JPG, WebP, SVG, PDF, DOCX, ZIP, MP3, MP4, and any other file type.
100% Local Conversion: Files are parsed directly in the web browser. No network requests are made, keeping your files safe.
Rich Exports: Instantly copy Data URIs (with MIME prefixes) or Raw Base64 strings, or download them as .txt files.

How to Convert File to Base64

Drag and drop your target file, or click inside the dropzone to select it.
The converter will instantly process the file bytes locally.
Preview the file in the sidebar to verify the contents.
Copy the Data URI or Raw Base64 string, or click "Download output (.txt)" to save.

Frequently Asked Questions (FAQs)

What is the difference between Data URI and Raw Base64?

A Data URI includes a metadata header (e.g., `data:image/png;base64,`) that allows web browsers to render the content directly, such as in `<img src='...'>`. Raw Base64 is only the encoded payload without headers.

Is there a file size limit?

We recommend keeping files under 20MB. Very large files generate huge Base64 strings which can consume significant browser memory and cause lag.