Base64 Encode Text & Files Online (RFC 4648 Compliant)
Encode text or binary files to Base64 strings and decode Base64 back to original files or UTF-8 text in your browser.
Encode authentication credentials, cryptographic keys, and binary data into safe ASCII characters for HTTP headers, HTML inline data, and data URIs. Complies strictly with RFC 4648 specifications.
How to Use Base64 Encode Text & Files Online (RFC 4648 Compliant)
Select Your File
Drag and drop your file or click Browse to select from your device.
Set Target Options
Choose desired format, compression level, or customization parameters.
Convert & Download
Click Convert to process instantly in local memory and save your result.
Frequently Asked Questions
Does this encoder support UTF-8 special characters and emojis?
Yes! Many legacy browser tools fail on Unicode characters with btoa(). Our encoder encodes multi-byte UTF-8 character points correctly without exceptions.
What is the difference between standard Base64 and URL-Safe Base64?
Standard Base64 uses "+" and "/" characters with "=" padding. URL-Safe Base64 replaces "+" with "-" and "/" with "_" and strips padding to prevent HTTP URL parameter errors.
Can I encode binary files directly from my hard drive?
Yes. You can drag and drop any file (images, PDFs, keys) to convert raw binary bytes into a Base64 string instantly.
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