Base64 Encoder & Decoder

Encode and decode Base64 data with support for text, files, and images

Input (Plain Text or File)

Drop a file here or click to browse

Supports all file types including images

- OR -

Output (Base64)

Encoded Base64 will appear here...

Input (Base64)

Output (Plain Text)

Decoded text will appear here...

About Base64 Encoding

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It's commonly used for embedding images in HTML/CSS, transmitting data over text-based protocols, and encoding data in URLs or JSON.

Base64 Encoder & Decoder Online Tool

A powerful and user-friendly online tool that allows you to encode and decode Base64 data instantly. Whether you're working with text, files, or images, our Base64 converter makes the process simple and efficient.

Key Features

  • Text Encoding/Decoding: Convert plain text to Base64 and vice versa
  • File Support: Encode any file type to Base64, including images, PDFs, and documents
  • Image Preview: Automatically detect and preview Base64 encoded images
  • Drag & Drop: Easy file upload with drag and drop functionality
  • Real-time Statistics: See character counts and size changes
  • Download Results: Save encoded or decoded output as files
  • Copy to Clipboard: Quick copy functionality for easy sharing

How to Use

Encoding:

  1. Click the "Encode" tab
  2. Either drag and drop a file or enter text in the input area
  3. Click "Encode to Base64" button
  4. Copy or download the Base64 encoded result

Decoding:

  1. Click the "Decode" tab
  2. Paste your Base64 encoded text in the input area
  3. Click "Decode from Base64" button
  4. View, copy, or download the decoded result
  5. If it's an image, click "Preview if Image" to see the image

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It works by translating binary data into radix-64 representation, using 64 ASCII characters (A-Z, a-z, 0-9, +, /).

Common Use Cases

  • Email Attachments: MIME email protocol uses Base64 for binary attachments
  • Data URLs: Embedding images directly in HTML/CSS using data: URLs
  • API Communication: Transmitting binary data in JSON or XML
  • Authentication: Basic authentication headers in HTTP
  • Storing Binary Data: Saving binary data in text-based databases

Frequently Asked Questions

Base64 encoding is used to convert binary data into ASCII text format. It's commonly used for embedding images in HTML/CSS, transmitting data over email (MIME), storing binary data in text-based formats like JSON or XML, and encoding authentication credentials in HTTP headers.

No, Base64 is NOT a security or encryption mechanism. It's simply an encoding scheme that converts binary data to text. Base64 encoded data can be easily decoded back to its original form. Never use Base64 for securing sensitive data - use proper encryption methods instead.

Base64 encoding typically increases the data size by about 33%. This happens because every 3 bytes of binary data are represented by 4 Base64 characters. The trade-off is that the data becomes safe for transmission over text-based protocols.

Yes! You can encode any file including images (PNG, JPG, GIF, etc.) to Base64. Simply drag and drop your image file into the encode panel, and you'll get the Base64 string. This is commonly used for embedding images directly in HTML, CSS, or JSON data.

Yes, absolutely! All encoding and decoding happens entirely in your browser using JavaScript. Your data never leaves your computer or gets sent to any server. This ensures complete privacy and security for your files and text.

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