How to Use the URL Encoder / Decoder

Encode query values and decode percent-encoded URLs safely - a practical guide for debugging links, redirects, and APIs.

Spaces, ampersands, and other reserved characters break URLs when they are not percent-encoded. The URL Encoder / Decoder helps you prepare safe query values and reverse encoded strings when you are debugging redirects, analytics links, OAuth callbacks, or API parameters.

Paste text or a URL fragment into the input, choose Encode or Decode, and watch the output update in real time. Encoding uses encodeURIComponent-style rules, which is what you usually want for individual query parameter values and path segments. Decoding turns sequences like %20 and %26 back into readable text so you can see what a server or browser actually received.

If decoding fails, the input likely has a malformed percent sequence - for example a lone % or incomplete hex digits. Fix the encoding and try again. When the result looks right, copy it into your browser, Postman request, or code.

Reach for it when building shareable links, chasing broken redirects, or reading logs full of percent-encoded noise. Working locally means you can use real production URLs without dropping them into a random third-party form that keeps history.