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🔤 Base64 & URL Encoder/Decoder

Encode and decode Base64 and URL strings with validation

Understanding Encoding

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format using 64 different characters (A-Z, a-z, 0-9, +, /). It's commonly used to encode binary data for transmission over text-based protocols like email or HTTP, and in data URIs for embedding images in HTML/CSS.

URL Encoding Explained

URL encoding (percent-encoding) converts special characters in URLs to a safe format using % followed by two hexadecimal digits. For example, a space becomes %20. This ensures URLs can be safely transmitted over the internet without being misinterpreted by browsers or servers.

Common Use Cases

Base64 is used for encoding images in data URIs, email attachments (MIME), authentication tokens, and storing binary data in JSON/XML. URL encoding is essential for query parameters, form data submission, and any user input that becomes part of a URL.

How to Use This Tool

  1. Choose between Base64 or URL Encoding tabs based on your encoding needs
  2. Paste or type the text you want to encode, or the encoded string you want to decode in the input field
  3. Click 'Encode' to convert plain text to encoded format, or 'Decode' to convert encoded text back to plain text
  4. View the results in the output field - any errors will be displayed with helpful messages
  5. Click the 'Copy' button to copy the encoded or decoded result to your clipboard for use in your project

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used to encode binary data for transmission over text-based protocols like email or HTTP.

What is URL encoding?

URL encoding (also called percent-encoding) converts special characters in URLs to a format that can be safely transmitted over the internet. Special characters are replaced with % followed by two hexadecimal digits.

When should I use Base64 encoding?

Use Base64 when you need to encode binary data (like images or files) for inclusion in text-based formats like JSON, XML, or HTML. It's also used in data URIs and email attachments.

Is this tool free to use?

Yes, this Base64 and URL encoder/decoder is completely free to use with no registration or limitations.

Does this work on mobile devices?

Yes, this tool is fully responsive and works on all mobile devices, tablets, and desktop computers.