Sell your Chametz online

https://www.gov.il/en/service/chametz_sale

Use this service to sell your Chametz online n Israel or abroad through the Chief Rabbinate of Israel.

 https://www.chabad.org/holidays/passover/sell_chometz_cdo/jewish/Sell-Your-Chametz-Online.htm

 Chabad.org facilitates this service here at no charge. Note: Halachic authorities have ruled that online authorizations are acceptable for this sale (though transacting the authorization personally with one's rabbi is normally preferable).