Decode Base64-encoded text back to readable characters. Paste a Base64 string — standard or URL-safe — and get the decoded text immediately. Common for JWT payloads, email attachments, data URIs and API debugging. Decoding runs entirely in your browser.
🔒 Your file is processed locally in your browser whenever supported. This tool runs entirely on your device — nothing you type or upload is sent to a server, logged, or stored.
A binary-to-text encoding that maps three bytes to four ASCII characters from a 64-symbol alphabet. It is not encryption — anyone can decode it. Use it for transport safety, not secrecy.
The payload may be binary (images, compressed data) rather than text, or it may be URL-safe Base64 with - and _ instead of + and /. This tool accepts URL-safe input; binary payloads will still look noisy as text.
No. Base64 is encoding, not encryption. Never store or transmit passwords as 'protected' Base64 — use proper hashing and TLS instead.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Encode any text into Base64. Runs entirely in your browser.
Percent-encode text for safe use in URLs and query strings.
Decode percent-encoded URLs back into readable text.
Decode a JWT header and payload locally. Signatures are never verified or sent anywhere.
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