ProToolBox

Base64 Decoder — Turn Base64 Back Into Readable Text Instantly

Paste Base64 (line breaks OK)—get UTF-8 text, length stats, optional Live, and one-tap copy. Whitespace stripped and padding fixed automatically. No upload, no signup, no watermark.

Decode Base64 online

Decode logs, devtools payloads, and PEM-style blobs back to readable UTF-8.

1 Paste Base64 · 2 Decode · 3 Copy

Base64 input

Decoded text

Try . Encode? Base64 encoder. URLs? URL decoder.

Runs in this tab only—no server upload, no signup, no watermark.

Paste Base64 (line breaks ignored)—we show decoded length and Copy text.

What you will see: Decoded text, stats, and Copy text. Next: click Decode or keep Live on.

Decoded text appears here

Paste Base64 (PEM-style line breaks are fine), or tap sample Base64.

Next: Copy text into your editor. This expects standard Base64 text—not raw JWT signatures alone. Turn off Live for huge blobs. · All tools

  • Works in your browser—runs on your device, not our servers
  • No upload required—your input stays in this tab
  • Free and instant
  • No account needed
  • Private by default—the same ProToolbox promise on every page

What this is for

Base64 Decoder — Turn Base64 Back Into Readable Text Instantly helps you format, validate, and encode before paste: works in your browser, no account needed. JSON, YAML, Base64, URLs, escapes—check here first, then ship to PRs, Slack, or configs.

  • Re-validate after every payload edit
  • Copy from the panel—nothing leaves your device until you do
  • Local run for tokens and internal data
  • Green here, then paste into production paths

Security: Fast correctness pass only—secrets still go through your team’s review.

Why decode Base64

APIs, configs, and logs often wrap UTF-8 in Base64. Decoding locally lets you inspect payloads without pasting secrets into random websites.

How it works

  1. Paste Base64 (one line or many).
  2. Click Decode Base64 or keep Live on.
  3. We strip whitespace, normalize URL-safe characters, and auto-pad = when possible.
  4. Copy text or re-encode with Base64 encoder.

FAQ

  • JWT three-part tokens? Split on . and decode the payload segment only—that middle chunk is Base64url.
  • Binary output gibberish? The bytes may be gzip, protobuf, or an image—this tool shows UTF-8 text when possible.
  • Still failing? Confirm the string is Base64, not hex, and that it is not truncated.

Bookmark this page when you live in devtools—decoded text is one paste away.

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