🔗 URL Builder
Build URLs with query parameters visually. Add, edit, and remove parameters with live URL preview — all in your browser, no upload, instant results.
About the URL Builder
This URL builder runs entirely in your browser. Type a base URL, add as many query parameters as you need, and the tool combines them into a properly encoded URL string. Nothing is uploaded — all construction happens locally with JavaScript on your device.
Why use a visual URL builder?
- Correct encoding — Special characters in keys and values are percent-encoded automatically, so spaces, ampersands, and Unicode are handled safely.
- Less error-prone — No more hand-joining query strings and forgetting a
?or&between segments. - Repeatable — Build the same complex tracking URL multiple times without missing a parameter.
- Sharable — Copy the final URL and paste it anywhere: analytics dashboards, ad campaigns, emails, or chat.
How to use the builder
- Enter your Base URL (for example
https://example.com/path). - For each parameter row, type a key and a value. Use Add Parameter to create more rows and the remove button to delete one.
- Click Build URL. The encoded URL appears in the output box.
- Click Copy to copy the URL, or Open URL to load it in a new browser tab.
Frequently asked questions
Does this tool upload my URL? No. Everything happens locally in your browser. Your URLs and parameters never leave your device.
How are values encoded? Each key and value is percent-encoded with encodeURIComponent, the same algorithm browsers use. Reserved characters like spaces become %20 and & becomes %26.
What happens to an empty value? If a value is empty but the key is set, the parameter is still included as key=. Empty keys are skipped entirely.
Can I include a fragment (#) or existing query? Yes. If your base URL already contains a query string, the new parameters are appended with &. Fragments are preserved at the end of the URL.