Base64 Encoder

Our free online Base64 Encoder tool makes it simple to encode text or binary data to Base64. This tool enables you to convert input into Base64-encoded format with a single click, whether you're handling file uploads, sending data via URLs, or embedding images in HTML.

Base64 Encoding: What Is It?

Base64 is binary to text encoding method that use ASCII characters to represent binary data. It is frequently used to send data via formats like email or JSON that are made to handle text datas. The Letters A–Z, a–z, 0–9, +, and / make up the Base64 alphabet. Safe transfer of binary content across text-based protocols, including files, images, and other non-text data.

Why Use a Base64 Encoder?

Base64 encoding is useful when:

• Embedding image or file data directly into HTML or CSS files
• Sending data via query strings or REST APIs
• Storing small binary data in JSON or XML
• Encoding authentication credentials (e.g., in HTTP headers)

How to Use This Tool

1. Paste your input text or upload a file
2. Click on the “Encode” button
3. Copy the generated Base64 output

Features

• Fast Conversion: Get your encoded data instantly
• Text & File Input: Encode text or upload any file format
• Safe & Secure: All encoding happens directly in your browser
• Line Break Option: Choose whether to add line breaks in the output (for MIME compatibility)

Example

Original: HelloBase64

Encoded: SGVsbG9CYXNlNjQ=

Common Use Cases

• Embedding images directly in HTML or CSS as data URIs
• Encoding binary attachments for email (MIME format)
• Transmitting binary content via JSON in APIs
• Obfuscating strings for temporary storage or transfer

Security & Privacy

This Base64 Encoder runs entirely in your browser. Your data never leaves your device, ensuring full privacy and security for sensitive text or file content.