Base64 Encoder & Decoder

What is Base64?

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. It is commonly used to embed binary data (like images or other files) within text-based formats such as JSON, XML, or email. It ensures that the data remains intact without modification during transport.

This tool provides a fast and secure way to encode and decode Base64 strings entirely within your browser, ensuring your data privacy.

How to Use This Tool

1. Input: Paste your text or Base64 string into the "Input" textarea.
2. Encode/Decode: Click "Encode" to convert plain text to Base64, or "Decode" to convert a Base64 string back to plain text.
3. URL-Safe: Check the "URL-Safe" option if you need to encode/decode Base64 strings that are safe for use in URLs (replaces `+` with `-` and `/` with `_`).
4. Auto-Detect: The tool will attempt to detect if your input is a valid Base64 string.
5. Stats: View character counts and size comparisons to understand the encoding overhead.

Common Use Cases

• Embedding Data: Embed small images or other binary assets directly into HTML, CSS, or JSON.
• Email Attachments: Base64 is often used to encode email attachments for reliable transmission.
• API Tokens: Encode API keys or authentication tokens for safe transmission in HTTP headers or URLs.
• Data Obfuscation: Simple obfuscation of data (not encryption) for storage or transmission.
• Cross-Platform Compatibility: Ensure data integrity when transferring between systems with different character encoding standards.