Convert Base64 to Text Online — Decode Base64 Strings to UTF-8

Decode Base64 strings back to readable plain text online. Supports UTF-8 strings, Basic Auth tokens, and binary encoded payloads.

✓ Decodes RFC 4648 Base64 back into original UTF-8 text

✓ Handles missing padding or URL-safe Base64 strings (- and _ characters)

✓ Instant validation with friendly error messages for corrupted input

✓ Runs 100% locally in your browser

How It Works

  1. Paste your Base64 encoded string.
  2. The decoder reconstructs binary byte values and decodes UTF-8 codepoints.
  3. Readable plaintext appears immediately in the output panel.

Frequently Asked Questions

Can this decode JWT tokens?

Yes, you can paste the payload segment (between the dots) of any JWT token to view its decoded claims.