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Decode Base64 strings into beautified JSON for API debugging, token inspection, and config cleanup.
Top-Level Items
0
Output Lines
0
Input Size
0 B
Output Size
0 B
Drop a file here
or paste directly in the input editor.
Base64 Input
JSON Output
This converter decodes Unicode-safe Base64 text, parses the decoded value as JSON, and formats the result with two-space indentation.
This tool is built for developers, analysts, and data teams who need a fast, private way to convert structured data without installing a desktop app or sending files to a server.
Convert payloads into the format your endpoint, test fixture, or documentation needs.
Move structured records between config files, spreadsheets, and JSON-based systems.
Prepare clean examples for pull requests, support tickets, docs, and automated tests.
Keep everyday conversion work local in the browser instead of uploading sensitive data.
Input Base64 example:
ewogICJ1c2VyIjogewogICAgImlkIjogMTAwMSwKICAgICJuYW1lIjogIkFsaWNlIEpvaG5zb24iLAogICAgInJvbGVzIjogWwogICAgICAiYWRtaW4iLAogICAgICAiZWRpdG9yIgogICAgXSwKICAgICJhY3RpdmUiOiB0cnVlCiAgfQp9
Output JSON example:
{
"user": {
"id": 1001,
"name": "Alice Johnson",
"roles": [
"admin",
"editor"
],
"active": true
}
}Yes. It is free and runs in your browser.
For complete JWT inspection, use the JWT Decoder. This tool expects Base64-encoded JSON text.
Yes. You can copy or download the beautified JSON.