For prototyping
Prototype ideas at the speed of thought
Spin up clickable, real-looking product concepts from a prompt. Test flows, demo to stakeholders, and throw them away just as fast.
What you can build
Clickable concept
A working flow you can click through — not a static mockup.
App dashboard mock
Realistic data views to pressure-test layout and hierarchy.
Landing experiments
Spin up variants to A/B your message before you commit.
Idea → demo fast
Describe the flow and get something real to click in minutes.
Iterate freely
Try ten directions in the time a mockup takes — just keep asking.
Share instantly
Publish a live link so stakeholders can try it, not just view it.
Prototype your next idea
Go from concept to clickable demo with SiteFast — instantly.
Start building free