Base64 JSON Encode & Decode

How to Use Base64 JSON Encode & Decode Tool

Step 1: Enter Input

Paste your JSON data into the Input box if you want to encode it.
Paste a Base64 string if you want to decode it.

Step 2: Encode JSON to Base64

Click the Encode button.
Converts valid JSON into Base64 format for safe transmission or storage.

Step 3: Decode Base64 to JSON

Click the Decode button.
Converts Base64 string back into readable JSON format.

Step 4: Copy Output

Use the copy icon on Input or Output boxes to quickly copy content.

Important Notes

• Input must be valid JSON for encoding
• Input must be valid Base64 for decoding
• All processing happens inside your browser
• No data is sent to any server

Example

JSON Input:

{
  "name": "John",
  "age": 25
}

Base64 Output:

eyJuYW1lIjoiSm9obiIsImFnZSI6MjV9