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Convert tools

URL Builder

Build an HTTP or HTTPS URL from a base, JSON query values and a fragment.

Convert in your browser · No sign-up

Replaces the existing query. Arrays produce repeated parameters; null becomes empty. The URL is constructed without being opened.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Build an HTTP or HTTPS URL from a base, JSON query values and a fragment.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

URL + {"q":"hello world"} → ?q=hello+world

Details and limitations

Text stays in your browser; it is not sent to a conversion server.

Format references

Tool page updated: