Nepal Tourist Visa Antons Kayak School
A quick video showing how to complete your online visa aplication which speeds up the process on arival in Kathmandu Airport. You currently need to bring a passport photo with you and pay in cash on arrival but there is now a button to pay online so maybe this service will be available soon!
Offical Visa Link https://nepaliport.immigration.gov.np/
Do not use third parties as there are many scams out there!