Decode Base64 encoded JSON back into readable JSON instantly in your browser.
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Your data is processed entirely in your browser.
Nothing is uploaded to our server.
How to Use Base64 to JSON Decoder
Paste your Base64 encoded JSON into the input box.
Click Decode to JSON.
Review the decoded and formatted JSON output.
Use Copy JSON to copy the result.
Use Download JSON to save the decoded JSON file.
About Base64 to JSON Conversion
Base64 is an encoding method commonly used to represent binary or text
data using a limited set of characters. When JSON data has been encoded
as Base64, this tool decodes the Base64 data and parses the result as
JSON so it can be viewed in a readable format.
Frequently Asked Questions
Is this Base64 to JSON decoder free?
Yes. The tool is free to use directly in your browser.
Is my Base64 data uploaded to a server?
No. Decoding and JSON parsing are performed locally in your browser.
What happens if the Base64 data is invalid?
The tool checks the Base64 input and displays an error when invalid
characters or an invalid Base64 length is detected.
What happens if the decoded content is not valid JSON?
The tool displays an error instead of generating JSON output.
Does the decoder support Unicode JSON?
Yes. The decoder uses UTF-8 text decoding so encoded JSON containing
Unicode characters can be decoded correctly.