Base64 Encoder/Decoder

Input Type

Input Text

0 characters

Output (Base64)

0 characters

📤 Encode Mode: Upload any file to convert it to Base64 string

📁

Drop your file here

or click to select a file

Supports any file type

Quick Examples

💡 About Base64

🔐

What is Base64?

Encoding scheme to represent binary data in ASCII text format

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Common Uses

Data URIs, API requests, email attachments, JWT tokens

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Web Safe

Safely transmit data over text-based protocols

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Size Increase

Base64 encoded data is ~33% larger

💡 Pro Tips

Base64 is NOT encryption - data is easily decoded
Perfect for embedding small images in HTML/CSS
Used in data URIs: data:image/png;base64,...
Common in JWT tokens and API authentication
Safe for URLs and email transmission

🎯 Use Cases

Encode images for data URIs
API request/response payloads
Email attachments (MIME)
Store binary data in JSON
Embed fonts and files in CSS

Base64 Encoding & Decoding Use Cases

🔐 Base64 Encode for API Authentication

Encode credentials for Basic Authentication headers. Convert username:password to Base64 for API requests, REST endpoints, and HTTP authentication. Essential for developers testing APIs and webhooks.

🖼️ Convert Image to Base64 Data URI

Embed images directly in HTML, CSS, or JSON. Convert images to Base64 strings for email templates, CSS backgrounds, or inline SVG. Eliminates external image requests and improves page load speed.

📄 Encode Files for Email Attachments

MIME email attachments use Base64 encoding. Convert files to Base64 for programmatic email sending, API file uploads, or data transmission. Works with PDFs, images, and documents.

🔗 Base64 URL Safe Encoding

Encode data for URLs and query parameters. Base64 makes binary data URL-safe by replacing special characters. Perfect for passing encrypted tokens, session data, or binary content in URLs.

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It uses 64 characters (A-Z, a-z, 0-9, +, /) to represent data, making it safe for transmission in text-based systems like email, JSON, and URLs.

Why Use Our Base64 Tool?

✅ Bidirectional: Encode text to Base64 or decode Base64 back to text
✅ File Support: Encode/decode images, PDFs, and any file type
✅ Real-Time: Instant encoding/decoding as you type
✅ No Upload: All processing in your browser—100% private
✅ Developer Friendly: Perfect for API testing and debugging
✅ Copy to Clipboard: One-click copy of encoded/decoded results