🔐 Base64 Encoder/Decoder

Encode or decode text and files to/from Base64 format instantly. All processing happens in your browser.

Input Text 0 characters

Output 0 characters

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About Base64 Encoder/Decoder

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used for encoding data in email, data URLs, and transferring binary data over text-based protocols.

How to Use

Text Encoding: Enter plain text and click "Encode to Base64" to convert it.
Text Decoding: Paste Base64 string and click "Decode from Base64" to get original text.
File Encoding: Switch to "File" tab, choose a file to encode it to Base64.
Copy Output: Use the copy button to easily copy results to clipboard.

Common Use Cases

Data URLs: Embed images and files directly in HTML/CSS using Base64.
API Authentication: Encode credentials for Basic Authentication headers.
Email Attachments: Encode binary files for email transmission.
JSON Data: Include binary data in JSON format safely.
Web Development: Encode fonts, icons, and small images inline.
Data Transfer: Send binary data over text-only protocols.

What is Base64?

Base64 encoding converts binary data into a set of 64 ASCII characters (A-Z, a-z, 0-9, +, /). This makes binary data safe to transmit over systems designed for text. While Base64 increases data size by approximately 33%, it ensures compatibility across different systems.

Features

Text Encoding/Decoding: Convert text to/from Base64 format.
File Encoding: Encode any file type to Base64 string.
Character Counter: Track input and output sizes in real-time.
UTF-8 Support: Properly handles international characters and emojis.
Privacy First: All processing happens locally in your browser.

Privacy & Security

Your data is processed entirely in your browser using JavaScript. No text or files are sent to any server, stored in databases, or logged. Your data remains completely private and secure.

Important Notes

Base64 is an encoding scheme, not encryption. It doesn't provide security.
Base64 encoded data is approximately 33% larger than the original.
Large files may take a moment to encode due to browser processing.