Two design skills · both proven

vercel-react-view-transitions vs web-design-guidelines

Both skills were run through Claude twice: once on a fixed brief without the skill, once with it. The briefs differ because each is written for the job the skill claims to do, so compare each skill against its own baseline, then decide which difference matters for your work.

vercel-react-view-transitions

Guide for implementing smooth, native-feeling animations using React's View Transition API (`<ViewTransition>` component, `addTransitionType`, and CSS view transition pseudo-elements). Use this skill whenever the user wants to add page transitions, animate route changes, create shared element animations, animate enter/exit of components, animate list reorder, implement directional (forward/back)…

Category: Design
Source: vercel-labs/agent-skills
License: Not stated
Proof model: claude-opus-5-5
Brief: “Build a photo gallery for a small travel photographer as a single HTML page using React from a CDN: a grid of twelve photos drawn with inline SVG or CSS gradients, where clicking a photo smoothly expands it into a detail view with a caption and location, and going back animates it into its place in the grid. Filtering the grid by country should animate the reordering too.”
Skill commit: 063bee9

Without the skillWith vercel-react-view-transitions

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Without, runWith vercel-react-view-transitions, run3 independent runs per side, none selected by hand.

Download the with-skill page

web-design-guidelines

Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".

Category: Design
Source: vercel-labs/agent-skills
License: Not stated
Proof model: claude-opus-5-5
Brief: “Build the sign-up page for Lantern, a weekly newsletter on independent software businesses. Include a hero that sells the newsletter, a preview of a recent issue, a sign-up form with name, email and a topics checklist, clear inline error and success states, three reader quotes, and a footer. Draw any imagery with inline SVG and CSS.”
Skill commit: 063bee9

Without the skillWith web-design-guidelines

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Without, runWith web-design-guidelines, run3 independent runs per side, none selected by hand.

Download the with-skill page

We don’t pick a winner for you: the pages are the evidence. Both proofs can be repeated with the brief, model and commit shown above. See alternatives to vercel-react-view-transitions or alternatives to web-design-guidelines.