This tool will help you to insert some URL into another as parameter. Inserted URL must be Encoded! It`s very useful for web designers.

For example:
You should to insert:
www.hard-soft.rs/action.php?affiliate=kostunica&country=dembelija&future=dark

as URL parameter into following link:

www.download4you.com/do.php?print=y&confirm=y&anything=n&url=...

Result is:
www.download4you.com/do.php?print=y&confirm=y&anything=n&url=www%2Ehard%2Dsoft%2Eco%2Eyu%2Faction%2Ephp%3Faffiliate%3Dkostunica%26country%3Ddembelija%26future%3Ddark

and this is correct way.

If you try to insert URL into another URL without encoding you will lose parameters.