Developer Tools
Build full URLs from a base URL and query parameters so links are easier to create correctly.
Use this URL Builder to create a full URL from a base address and parameter list. It is useful for tracking links, redirect targets, API requests, test URLs, and debugging when you want to build a correct URL without manually joining query strings and separators.
Use this URL Builder to create a full URL from a base address and parameter list. It is useful for tracking links, redirect targets, API requests, test URLs, and debugging when you want to build a correct URL without manually joining query strings and separators.
Use url builder when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
https://example.com/search --- q=hello world page=2
Output
https://example.com/search?q=hello%20world&page=2
Useful when building a search URL with encoded parameter values.
Input
https://api.example.com/items --- limit=10 sort=desc
Output
https://api.example.com/items?limit=10&sort=desc
Helpful when constructing request URLs quickly.
Fix: Put the base URL on the first line before the separator.
Fix: Use one parameter per line in key=value format.
Fix: Use URL Splitter or URL Parser when you need to break apart an existing URL.
It creates a full URL from a base address and a list of query parameters.
Enter one parameter per line using key=value format.
Yes. Parameter values are encoded when building the final URL.
URL Builder creates a URL from parts, while URL Splitter breaks an existing URL into readable parts.
The most common reasons are a missing base URL, bad key=value formatting, or incorrect parameter lines.