Generate Complete PRDs in 10 Minutes
Describe your feature. AI writes a full Product Requirements Document with user stories, acceptance criteria, success metrics, and technical considerations.
Generate Complete PRDs in 10 Minutes
River's PRD Generator creates complete Product Requirements Documents from your feature ideas. Describe what you want to build, and the AI writes comprehensive documentation including problem statement, user stories with acceptance criteria, functional requirements, technical considerations, success metrics, timeline, and risk assessment. Used by 2,000+ product managers at startups and enterprises.
Unlike vague feature descriptions that lead to scope creep and miscommunication, our PRDs provide structured specifications that align teams. The AI understands PRD best practices: clear problem definition, measurable success metrics, prioritized requirements (P0/P1/P2), user-focused language, and technical feasibility considerations. You get PRDs that answer questions before they're asked.
Perfect for product managers planning sprints, engineering leads scoping projects, founders defining product vision, and teams that need alignment on requirements. Whether you're planning a major feature or a small improvement, clear PRDs prevent rework and ensure everyone builds the right thing.
What Makes PRDs Effective
PRDs succeed when they align teams and prevent miscommunication. Effective PRDs start with clear problem statement (what problem, for whom), define measurable success metrics (how we know it worked), list prioritized requirements (must-have vs nice-to-have), include user stories from actual user perspective, address technical considerations, specify out-of-scope items, and provide timeline estimates. Weak PRDs are vague or assume shared understanding. Strong PRDs make implicit assumptions explicit.
The best PRDs balance completeness with readability. Executive summary first (what, why, effort). Problem statement and user research. Success metrics (quantifiable goals). Functional requirements (what system does) and non-functional requirements (performance, security). User flows. Edge cases. Error handling. Dependencies. Timeline. Risks. Every section serves a purpose. Cut fluff. Add detail where it prevents confusion.
To improve PRDs, involve engineers early. Define success metrics upfront. Prioritize ruthlessly. Write user stories from actual user perspective. Include mockups or flows. Specify what's out of scope. Update as requirements change. Time spent writing clear PRD saves multiples in development time.
What Your PRD Includes
Executive summary with effort estimate
Clear problem statement and user research summary
User stories with detailed acceptance criteria
Prioritized functional requirements (P0/P1/P2)
Non-functional requirements (performance, security, scalability)
Success metrics and KPIs with targets
Technical considerations and dependencies
Timeline with milestones and risk assessment
How It Works
- 1Describe your featureEnter feature concept, user stories, goals, and any constraints
- 2AI writes complete PRDGenerates structured requirements document in 5-8 minutes
- 3Review and refineAdd specifics, adjust priorities, include mockups
- 4Share with teamDistribute to engineering, design, and stakeholders
Frequently Asked Questions
How detailed should my input be?
Provide as much detail as you have. Basic user stories are fine (As a user, I want to X so that Y). The AI expands them into full requirements with acceptance criteria. More detail in means better PRD out, but even rough feature concepts work as starting points.
Should I include technical implementation details?
PRDs focus on what to build, not how. Include technical constraints or dependencies (must integrate with existing auth system) but leave implementation details to engineering. If you have specific requirements for performance, security, or compatibility, include those.
What's the difference between functional and non-functional requirements?
Functional requirements describe what the system does (user can click button to save). Non-functional requirements describe how well it does it (save completes in under 1 second, handles 10,000 concurrent users). Both matter. Functional gets the feature built. Non-functional ensures it works well at scale.
How do I handle changing requirements?
PRDs are living documents. Version them and track changes. When requirements change, update the PRD and communicate to the team. Use the out-of-scope section to track features deferred to future versions. Clear documentation of changes prevents confusion.
Should PRDs include mockups?
Include mockups, wireframes, or user flows when they clarify requirements. Visual elements prevent misunderstanding better than paragraphs of description. Add them after generating the text PRD. For UI features, mockups are essential. For API features, data flow diagrams help.
What is River?
River is an AI-powered document editor that helps you write better, faster. With intelligent writing assistance, real-time collaboration, and powerful AI tools, River transforms how professionals create content.
AI-Powered Writing
Get intelligent suggestions and assistance as you write.
Professional Tools
Access specialized tools for any writing task.
Privacy-First
Your documents stay private and secure.
Ready to try Generate Complete PRDs in 10 Minutes?
Start using this tool in 60 seconds. No credit card required.
Generate Free PRD →