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Developer ToolsFree online tool
Encode or decode URL text when working with query strings and percent-encoded values.
Paste or enter the data you want to process, then run the tool.
Use the controls above, check the result, then copy or download it when available.
No. URL encoding changes representation; it is not encryption.
Use this tool whenever you need: Debugging links, API parameters, query-string values and URL construction. It offers a fast, client-side workflow without sign-ups, installation or complex software.
Yes. All processing executes locally in your browser using client-side JavaScript. Your inputs, files and calculations remain private and are never uploaded to our servers.
Encode individual parameter values when building URLs instead of blindly encoding an entire URL twice. Important note: Encoding does not make an unsafe URL trustworthy and does not validate server-side behavior.
Developer utility
Convert spaces, symbols and other URL characters safely. Everything runs locally in your browser.
1. Choose an action
Encode plain text for a URL, or decode percent-encoded text back.
Ready when you are
This tool uses the browser's standard URI component encoding: spaces become %20, and + is left unchanged when decoding unless you turn on the + option for HTML form data. It does not send or store your text.