Base64 Encoder
Encode text or files to Base64, including data URLs.
Runs entirely in your browser - your files are never uploaded
What is Base64 Encoder?
Base64 Encoder is a free, web-based utility designed for instant, local developer tools tasks. It allows users to compute, format, convert, or edit data directly in their browser without installing software or registering an account.
- 100% Free & Unlimited Usage
- 0% File Uploads (100% Client-Side Privacy)
- Instant Real-Time Calculations
- Mobile, Tablet & Desktop Compatible
How to use Base64 Encoder
Select or Enter Input
Provide your source file or type your values into Base64 Encoder.
Configure Settings
Adjust parameters, formatting options, or units in real-time.
Get Instant Output
Download the final processed file or copy the generated output.
About the Base64 Encoder
Convert UTF-8 text or a file into Base64 for embedding in JSON payloads, HTTP headers, email attachments or CSS data URLs.
File encoding returns a ready-to-paste data URL with the correct MIME type prefix.
Frequently asked questions
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