This simple Base64 to JSON utility is the missing link between your unreadable API response and the perfectly formatted JSON you need for debugging or analysis.
About This Base64 to JSON Tool
This tool is a simple but essential utility for developers, QA testers, and anyone working with modern web data. In many systems, JSON data is encoded into Base64 to ensure it can be safely transmitted without its special characters (like { or " ) causing problems. The issue? That Base64 string is completely unreadable to us humans. This tool solves that problem in a single step. Just paste your Base64 string, and it not only decodes it but also “pretty-prints” the result as perfectly formatted JSON, making it easy to read, debug, and understand.
Example
Let’s see it in action.
Base64 Input:
eyJuYW1lIjogIkpvaG4gRG9lIiwgImFjdGl2ZSI6IHRydWUsICJpZCI6IDEyMywgInNraWxscyI6IFsiSlNPTiIsICJBUEkiLCAiQmFzZTY0Il19
JSON Output:
After you click convert, the tool will display this:
JSON
{
"name": "John Doe",
"active": true,
"id": 123,
"skills": [
"JSON",
"API",
"Base64"
]
}
Use Cases
You might find this tool surprisingly handy in many situations:
- API Testing: Developers and testers use this constantly to decode API responses that are Base64 encoded to check if the correct JSON data is being sent.
- Debugging: When you find an encoded string in a log file or database, you can quickly paste it here to see what it really is.
- Inspecting JWTs: The “payload” part of a JSON Web Token (JWT) is often Base64 encoded. You can paste that part here to see the claims (like user ID, permissions, etc.).
- Understanding Encoded Data: Any time you encounter data that’s been “wrapped” in Base64 for transport, this tool helps you unwrap it and see the original JSON.