A PRD that engineers and stakeholders actually read
A good product requirements document answers three questions before any code is written: what problem are we solving, what does success look like, and what are we explicitly not doing. This builder enforces that structure so your spec is complete, scannable and free of the “we’ll figure it out later” gaps that derail delivery.
How it works
You provide the title, author, problem statement and primary goal, then list personas, functional requirements, non-functional requirements, success metrics and out-of-scope items — one item per line. The tool numbers each list and assembles a complete PRD with an executive summary, a goals-and-non-goals section, a requirements section split into functional and non-functional, measurable success metrics, an out-of-scope list to guard against scope creep, and placeholders for open questions and an appendix. The current date is stamped automatically.
Writing each section well
Problem statement — describe the situation users are in today and why it is painful, without mentioning the solution. If the problem statement requires you to name a feature, it is not a problem statement yet; it is a solution statement in disguise. A strong problem statement is specific enough that multiple engineers could independently design different valid solutions to it.
User personas — name the two or three user types most affected by this feature. Each persona should reflect a real segment of your user base, not an abstract archetype. Include one sentence on what they currently do without your feature so the requirement context is clear.
Functional requirements — what the product must do. Each requirement should be an observable, testable behaviour. For example:
- “A user can reset their password via a link sent to their registered email address.”
- “The search results page returns within 200ms at p95 for queries of up to 50 characters.”
- “Users receive an in-app notification when their order status changes.”
Avoid words like “should”, “could”, or “may” in functional requirements — they create ambiguity about whether the requirement is mandatory. Use “must” or state it flatly as a required behaviour.
Non-functional requirements — how well the product must perform its functions. These cover performance, security, accessibility, scalability, availability, and compliance. Non-functional requirements are frequently left vague (“it should be fast and secure”) and that vagueness creates scope disputes in QA. Write them as specific thresholds: “API endpoints must return within 300ms at p99”, “the feature must comply with WCAG 2.1 AA accessibility standards”, “no data is retained after account deletion within 30 days”.
Success metrics — how you will know the feature worked. Make every metric measurable and outcome-focused, not output-focused. “Feature shipped” is not a success metric. “User activation rate increases from 32% to 40% within 60 days of launch” is a success metric.
Out-of-scope — explicitly listing what the feature will not do is arguably the most valuable section. It prevents late-stage scope additions that were never agreed, gives engineering a clear mandate to decline related requests, and creates a record that can be revisited for a future release.
Common PRD mistakes
- Solving the solution instead of the problem. Starting the problem statement with “we need to build a feature that…” conflates the what with the why.
- Missing non-functional requirements. Engineers will make performance and security decisions without guidance if those requirements are absent. Those decisions may be wrong for your context.
- Treating out-of-scope as optional. The out-of-scope list is the primary tool against scope creep and saves significantly more time than it takes to write.
- Unmeasurable success criteria. If you cannot look at a dashboard in 30 days and declare with confidence whether the feature succeeded, the success criteria need to be rewritten.
Pair this PRD with the user-story builder to break functional requirements into stories sized for a sprint.