Encoding
Base64 Encoder/Decoder
Quickly encode and decode text and data.
Sensitive processing stays in your browser whenever possible.
Details
Base64 is not encryption; it only represents binary as transport-safe text. Many tokens and attachments use this format.
The tool is for quick troubleshooting, team training, and inspecting simple payloads—not a full traffic-analysis substitute.
Tips
- Do not treat Base64 data as confidential; anyone can decode it.
- In JWTs, header and payload segments are only Base64URL-encoded, not encrypted.
- Be cautious before decoding large or suspicious inputs from untrusted sources.