Base64 Encoder & Decoder

Encode text to Base64 format or decode Base64 back to plain text instantly in your browser. Convert images to Base64 strings for embedding in HTML, CSS, or JSON, or decode Base64 strings back to downloadable files. Base64 encoding is commonly used for embedding images in web pages, transmitting data over APIs, encoding email attachments, and storing binary data in text format. Our tool supports text encoding/decoding, file to Base64 conversion, and Base64 to file download - all processed locally without uploading your data to any server.

How to Use

Text Encoding/Decoding:

1. Enter text in the input area
2. Click "Encode to Base64" or "Decode from Base64"
3. Copy the result or download as file

File to Base64:

1. Upload an image or file
2. Get Base64 string instantly
3. Copy for use in code or APIs

Note: All processing happens locally in your browser.

Text Mode File Mode

Input Text / Base64

Encode to Base64 Decode from Base64

Result

Copy Download

Choose File

Base64 Output Copy Base64

Preview:

Frequently Asked Questions

What is Base64 encoding?

Base64 is a method of encoding binary data into ASCII text format using 64 characters. It's commonly used to embed images in HTML/CSS or transmit data over text-based protocols.

Why use Base64 encoding?

Base64 is useful for embedding images in web pages, sending binary data through APIs that only accept text, encoding email attachments, and storing binary data in JSON or XML.

Does Base64 compress data?

No, Base64 encoding actually increases file size by about 33%. It's not for compression but for encoding binary data as text.

Is my data uploaded anywhere?

No! All encoding and decoding happens locally in your browser. Your files and text never leave your device.