Free URL Encoder / Decoder

Encode or decode text for safe use in URLs with percent-encoding — instant, fully local, and faithful to the browser.

The URL encoder/decoder converts any text into percent-encoding — the format URLs require for characters like spaces, question marks, and non-ASCII letters — and converts encoded strings back into readable text. Percent-encoding (also called URL encoding) escapes each byte as a %-sequence: a space becomes %20 and é becomes %C3%A9, so any string can be carried safely in a query parameter or path segment without being misread as structure. The tool uses exactly the encodeURIComponent and decodeURIComponent functions built into every browser and Node.js, which means the result is identical to what your own code would produce — no third-party implementation, no ambiguity about which characters are escaped. That distinction matters: encodeURIComponent escapes every reserved character (including : / ? & =), which is what you want for a query value, while the related encodeURI function deliberately leaves those intact for whole URLs — the tool documents the difference and always uses the component form so encoded output can be round-tripped losslessly. Paste a URL, a search term, a token, or a whole blob of text; switch between Encode and Decode; copy the result in one click. Everything runs in your browser — nothing you encode or decode is uploaded, logged, or stored, so the tool is safe for API keys, signed URLs, and other strings you would not paste into a web service.

Processed locally in your browser