Submit a form to one URL from another URL

There is a website ([login to view URL]) from which user can fill and submit a small form. Result is a PDF file user can download. Can you write a script that just gives same result from another website ? That means a script that allows user (from my own website) to : - fill similar form - submit the form to "https://siv.interieur.gouv.fr/map-usg-ui/do/csa_retour_dem_certificat" - then retrive PDF file That is because I dont want to use a frame solution to call "https://siv.interieur.gouv.fr/map-usg-ui/do/csa_retour_dem_certificat" website from my own website. That is not smart. You can try with following data: Numéro d'immatriculation = AC-359-HF Date de première immatriculation du véhicule = 05/08/2009 Date du certificat d'immatriculation = 05/08/2009 (Si personne physique) Nom et prénom = ALONSO STEPHANE Please ask me any information you may need to clearify project if any Regards