Software & SaaS
Drafting a component library page that gets used
A component library page succeeds when someone can find a part, understand its behavior and copy it with confidence. This guide walks through drafting one page for a single component, using a dropdown menu as the example.
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Step one: define the component and its states
Begin with one component and write a sentence describing its job. For a dropdown menu: lets a person choose one option from a list of five or more. Then list every state it can be in: closed, open, hovering, focused, selected, disabled and error. Show each state as a labeled image rather than describing it in prose. This list becomes the backbone of the page, and gaps in it often reveal design decisions nobody has made yet. Keep the title plain so the page can be found by name.
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Step two: specify rules, not just pictures
Add the measurements and behaviors that make reuse consistent. For the dropdown, record the control height, padding, text size, maximum visible rows before scrolling, and keyboard actions such as arrow keys to move and escape to close. Include one short guidance block on when to use it and when a set of radio buttons would serve better. Rules turn a gallery into a library, because another designer can build a new screen without asking questions. Write each rule as a short sentence a developer can verify.
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Step three: review, link and version the page
Before publishing, ask a developer and a designer who did not draft the page to build a simple form using only what it says. Note every point where they hesitated and fix the wording. Then link the dropdown to related components such as text input and radio group, and add a version line with the date and a one-sentence change note. A page reviewed this way stays trustworthy, and the version line tells visitors whether the copy they hold is still current.