JSON URL Decode

Decode URL-encoded JSON data back to readable format. Convert percent-encoded JSON from URLs, query parameters, and form data to properly formatted JSON.

URL Encoded Input

Enter or paste your URL-encoded JSON string

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Auto-format decoded JSONPretty print with indentationValidate JSON syntaxCheck for valid JSON structure

Decoded JSON Output

Decoded and formatted result

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About JSON URL Decoding

URL decoding converts percent-encoded characters back to their original form. This is essential when working with JSON data that has been encoded for transmission via URLs or form submissions.

Common Decoded Characters

%22→"

%7B→{

%7D→}

%5B→[

%5D→]

%3A→:

%2C→,

%20→Space

Common Sources

Query string parameters in URLs
Form data submission
URL fragments and hash parameters
API endpoint parameters
HTTP header values
Cookie values with JSON data
POST request body encoding
Webhook payload transmission

Reviewed & Maintained by Wajahat QasimLast updated January 11, 2026

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