We use a product designer called Lumise and we're needing for the customer to be able to enter whatever dimensions they need and the canvas to scale with whatever they input. The plugin is already capable of changing different sizes we just need the customer to be able to choose.
68 freelancers are bidding on average $485 for this job
Placing my bid as I have done lots of plugin customizations, you are talking about HTML canvas scaling and I think I can help. +++++++++++++++++++++++++++++++++++++++++