JSON Base64 encoding converts JSON data to a Base64 string, commonly used in JWT tokens, URL parameters, and data transmission.

Can I decode a Base64-encoded JSON?

Yes, paste the Base64 string and the tool will decode it back to readable JSON.

Is URL-safe encoding supported?

Yes, the tool supports both standard and URL-safe Base64 variants.

JSON Base64 - Online JSON Base64 Encode/Decode

How to Use

Paste JSON data or Base64 encoded string into the left input box.
Click "Base64 Encode" to encode JSON data to a Base64 string.
Click "Base64 Decode" to restore a Base64 string to original JSON data.
Click "Copy Result" to quickly copy the output content.

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About JSON Base64

JSON Base64 is a free online tool for Base64 encoding and decoding of JSON data. Base64 is an encoding scheme that converts binary data to ASCII characters, widely used in URL transmission, email attachments, and data embedding.

In API development, Base64 encoding is commonly used in HTTP Basic authentication, JWT tokens, and data signing. This tool lets you quickly encode JSON data to Base64 strings for secure transmission, or decode Base64-encoded data back to readable JSON format.