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URL Builder

Compose a URL from its parts with correctly percent-encoded query parameters.

A URL builder assembles a link from its parts — scheme, host, path, query parameters and fragment — and percent-encodes each value so spaces, ampersands and non-ASCII characters cannot break the query string. It then shows the parsed result so you can confirm the browser reads it as intended.

Runs in your browser
Privacy
Runs entirely in your browser — nothing is uploaded
Cost
Free, unlimited, no sign-up

Frequently asked questions

When must I encode a query value?

Whenever it could contain a space, an ampersand, a hash, a plus or any non-ASCII character. An unencoded ampersand starts a new parameter and silently truncates your value, which is the most common URL bug there is.

How to use the url builder

  1. 1Enter or paste your base url.
  2. 2Enter or paste your path.
  3. 3Add each query parameters as a key and value pair.
  4. 4Enter or paste your fragment.
  5. 5Turn "Encode values" on or off as needed.
  6. 6The result appears immediately — copy or download it.

Embed this tool

Put the working url builder on your own site. It runs in your visitors' browsers exactly as it does here — free, no account, nothing uploaded.

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