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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Decoded JSON Output

Decoded and formatted result

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Encoded Size 0
Decoded Size 0
Size Reduction 0%

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 Qasim Last updated January 17, 2026