Free tool

Query String Decoder

Use Query String Decoder to process, validate or inspect data locally with a clear structured result.

Private browser processingNo source files stored

Query String Decoder

Choose a file or enter content. Processing stays in this browser.

Your selected files never leave this page.

Ready when you are

Add your file or content, then run the tool.

About Query String Decoder

Use Query String Decoder to process, validate or inspect data locally with a clear structured result.

Processing happens in your browser whenever the browser supports the requested operation, so your source file is not stored on our server.