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Base64 Decode

Free

Paste a Base64 encoded string to decode it back to readable text. Handles standard and URL-safe Base64. Detects and reports invalid padding or characters.

How to Use Base64 Decode

  1. 1

    Paste the Base64-encoded string you want to decode into the input field.

  2. 2

    The decoded text output appears instantly in the result panel below.

  3. 3

    If the input string is not valid Base64, an error message explains the issue (e.g. invalid padding or unexpected characters).

  4. 4

    Click "Copy" to copy the decoded result to your clipboard.

Features

  • ✓ Standard and URL-safe Base64 support
  • ✓ Error detection for invalid strings
  • ✓ Instant decoding
  • ✓ Copy to clipboard

Frequently Asked Questions

What if the decoded output is binary?

If the original data was binary (like an image), the decoded output may not be readable text. Use a dedicated binary tool for those cases.