Online Base64 Encoder & Decoder - Master Tools

A free online tool to instantly encode and decode Base64 strings. Convert text or files to Base64, including URL-safe variants, and decode them back with ease.

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Online Base64 Encoder & Decoder

A free online tool to instantly encode and decode Base64 strings. Convert text or files to Base64, including URL-safe variants, and decode them back with ease.

Features

Text Encoding
File Encoding
URL Safe Base64

Usage Examples

Basic Usage

Base64 Encoder and Decoder Usage Example

Usage Steps:

  1. Enter content - Paste text, a URL, or upload the file you need to process
  2. Run the action - Choose the encode, generate, verify, or extract operation
  3. Use the result - Review the output, then copy, download, or continue debugging

Features:

  • Online workflow - Use it directly in the browser without desktop software
  • Fast output - Get a result that is ready to copy or download
  • Debug-friendly - Useful for development, operations, and content cleanup

Use Cases:

  • API debugging, text encoding, file-to-text conversion, and Data URL workflows
  • Quick debugging - Verify whether input and output match expectations
  • Content workflow - Move the result into documents, APIs, or internal tools

Common Questions (Q&A):

  1. Q: What is Base64 Encoder and Decoder best used for?
    A: It is best for API debugging, text encoding, file-to-text conversion, and Data URL workflows. Open the page, enter or upload the content, then copy or download the result.
  2. Q: Is Base64 Encoder and Decoder safe for sensitive data?
    A: Use it on a trusted device and network. For private or production material, review the page behavior before pasting sensitive content.
  3. Q: What limitation should I know about?
    A: Base64 is encoding, not encryption, so it should not protect passwords or secrets.