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Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings. Supports standard and URL-safe Base64 encoding.

Text Input
Base64 Output

All Base64 Tools

Base64 Encoder

Convert any text to Base64 encoding instantly. Perfect for encoding data for URLs, APIs, and data storage.

Base64 Decoder

Decode any Base64 string back to original text instantly. Perfect for debugging APIs and decoding encoded data.

URL-Safe Encoder

Encode text to URL-safe Base64 format. Replaces + with - and / with _ for safe use in URLs and filenames.

URL-Safe Decoder

Decode URL-safe Base64 strings back to original text. Handles - and _ characters and missing padding automatically.

Image to Base64

Convert any image to Base64 data URI format. Perfect for embedding images in HTML, CSS, and JSON without external files.

Base64 to Image

Convert Base64 strings back to viewable images. Decode data URIs and download as PNG, JPG, or other formats.

File to Base64

Convert any file to Base64 encoding. Perfect for embedding PDFs, documents, and other files in web applications.

How to Use the Base64 Tool

Our Base64 encoder/decoder makes it easy to work with Base64 encoding:

  1. 1.Select Mode: Choose "Encode" to convert text to Base64, or "Decode" to convert Base64 back to text
  2. 2.Enter Input: Type or paste your text or Base64 string
  3. 3.URL-Safe Option: Enable for URL-safe Base64 (replaces + with - and / with _)
  4. 4.Click Encode/Decode: Get your result instantly
  5. 5.Copy or Swap: Copy the output or swap it back to input for reverse operation

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used when binary data needs to be stored or transferred over media designed for text. Base64 encoding converts every 3 bytes of data into 4 ASCII characters.

  • •Safely transmits binary data through text-only channels
  • •Embeds images directly in HTML or CSS
  • •Stores complex data in JSON or XML
  • •Encodes credentials in HTTP Basic Authentication

Standard vs URL-Safe Base64

Standard Base64 uses the characters A-Z, a-z, 0-9, +, and /, with = for padding. However, + and / have special meanings in URLs.

URL-Safe Base64 replaces these problematic characters:

  • •+ becomes - (hyphen)
  • •/ becomes _ (underscore)
  • •Padding = is often removed

Common Use Cases

  • •Data URIs: Embed images in HTML/CSS using data:image/png;base64,...
  • •Email Attachments: MIME encoding uses Base64 for attachments
  • •API Authentication: HTTP Basic Auth encodes credentials in Base64
  • •JWT Tokens: JSON Web Tokens use Base64URL encoding
  • •Configuration: Store binary data in text-based config files

100% Private - Your Data Stays Local

Unlike other Base64 tools that may process your data on remote servers, ZebbyBox's encoder/decoder runs entirely in your browser. Your text and encoded data are never uploaded anywhere, making it safe to encode sensitive information like passwords, API keys, or confidential data.

Unicode Support

Our Base64 tool fully supports Unicode characters. When encoding, text is first converted to UTF-8 bytes before Base64 encoding, ensuring that emojis, international characters, and special symbols are correctly preserved when decoded.