Base64 Encoder & Decoder

Safely convert text or files into Base64 format and back. 100% private, client-side processing.

Input Text / Base64

Result

Understanding Base64 Encoding

1

What is it?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation.

2

Data URIs

Commonly used to embed images, fonts, and other files directly into HTML or CSS to reduce the number of HTTP requests.

3

API Transfers

Used to transmit binary data through text-based protocols like JSON, XML, or SOAP without data corruption during transit.

Key Features

100% Client-Side

Your text and files never leave your browser. All conversion happens locally using our secure JavaScript engine.

Multi-File Support

Encode any file type—including images, ZIP archives, and PDFs—into a clean Base64 string or Data URI prefix.

UTF-8 Optimized

Handles special characters and multi-byte scripts perfectly, ensuring your encoded strings are always accurate.

Frequently Asked Questions

Is Base64 encryption?
No. Base64 is an encoding method, not encryption. It can be easily decoded by anyone and provides no security for sensitive data.
How much larger is Base64?
Base64 encoding typically increases the data size by about 33% compared to the original binary source.
Can I decode images?
Yes. If you have a Base64 string of an image, you can paste it in the text decoder or use it in an `` tag's `src` attribute.