🔓 Base64 Decoder

About This Tool

How to Use
  1. Paste your Base64-encoded text into the input area
  2. Click Decode to reveal the original content
  3. Use the Copy Result button to copy the decoded output
  4. For multi-layered encoding, decode repeatedly
Common Use Cases
  • Decoding JWT token payloads for debugging
  • Inspecting Base64-encoded email attachments
  • Debugging API request/response bodies
  • Decoding data URIs from HTML/CSS
Tips & Tricks
  • The decoder handles both standard and URL-safe Base64
  • Try decoding multiple times for nested encodings

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