Base64 Encoder Online
Convert text to Base64 format instantly
Encode your text to Base64 format with our powerful online tool. Support for multiple encodings, batch processing, and complete privacy.
Drag files here or click to input
Split output content by specified line length
Add '=' padding characters at the end
Base64 encoded result will appear here
How Base64 Encoding Works
Simple, secure, and private Base64 encoding
Input Text
Enter or paste your text, or upload a file to encode
Configure Settings
Choose encoding options like character encoding and line formatting
Encode to Base64
Our encoder processes your text instantly in your browser
Get Result
Copy or download your Base64 encoded text
Key Features
Everything you need for Base64 encoding
Instant Encoding
Convert your text to Base64 format instantly in your browser
Multiple Character Encodings
Support for Unicode, UTF-8, UTF-16, ASCII, and Latin1 encodings
Batch Processing
Process multiple files at once with our batch encoding feature
Privacy-first (Client-side)
All processing happens in your browser - your data never leaves your device
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Frequently Asked Questions
What is Base64 encoding?
Base64 is an encoding scheme that converts binary data into ASCII text format. It's commonly used to transmit data over channels that only support text.
Is Base64 encoding secure?
Base64 encoding is not encryption - it's just encoding. The encoded data can be easily decoded back to its original form. Do not use it for sensitive information.
Does Base64 encoding increase file size?
Yes, Base64 encoding increases data size by approximately 33%. This is because Base64 uses only 64 characters (6 bits per character) to represent 8 bits of original data.
Can I encode large files?
Our Base64 encoder works entirely in your browser, so the maximum file size depends on your device's available memory and browser limitations.
What character encodings are supported?
We support UTF-8, UTF-16, ASCII, and Latin1 character encodings. UTF-8 is the default and recommended encoding for most use cases.
Is my data private?
Yes, absolutely. All encoding happens in your browser using JavaScript. Your text never leaves your device or gets sent to any server.