The fast creation of low- or medium-fidelity representations of a design concept for the purpose of gathering early feedback and testing assumptions quickly. Rapid prototyping prioritizes speed of learning over quality of output — a rough sketch that can be tested in an hour is often more valuable than a polished prototype built over days.
Common contexts
- Sketching three competing navigation structures on paper and walking through them with a colleague before opening a design tool
- Building a throwaway Figma clickthrough in 90 minutes to validate a hypothesis before a sprint review
- Using a no-code tool to simulate a new feature's core interaction for a user interview the next morning
Use when
Default to rapid prototyping at the start of any design phase, and any time the team is debating competing approaches — the fastest way to resolve a design argument is to make both ideas tangible and test them.
Avoid when
Avoid rapid prototyping as a substitute for clear problem framing — building something fast when the problem isn't understood yet creates compelling artefacts that drive teams in the wrong direction with false confidence.
The bottleneck in rapid prototyping is almost never the tools — it's the designer's willingness to stop when the prototype is good enough to answer the question, rather than continuing to refine it toward production quality.
Real-world examples
- Google Ventures' Design Sprint methodology uses Keynote and paper prototypes to create 'realistic enough' artefacts in one afternoon for user testing the next day, compressing a typical 6-week process into 5 days.
- Figma's auto-layout and component properties allow experienced designers to produce a click-through prototype of a new feature in under 2 hours, enabling same-day user testing that was impossible in Sketch-era workflows.
- IDEO's 'build to think' rapid prototyping culture produced 43 iterations of a surgical tool handle in one week using 3D-printed foam models, arriving at an ergonomic form impossible to reach through drawing alone.