Two design skills · both proven

banner-design vs canvas-design

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.

banner-design

Design banners for social media, ads, website heroes, creative assets, and print. Multiple art direction options with optional generated or supplied visuals. Actions: design, create, generate banner. Platforms: Facebook, Twitter/X, LinkedIn, YouTube, Instagram, Google Display, website hero, print. Styles: minimalist, gradient, bold typography, photo-based, illustrated, geometric, retro…

Category: Design
Source: nextlevelbuilder/ui-ux-pro-max-skill
License: MIT
Proof model: claude-opus-5-5
Brief: “Design a set of launch banners for Brightline Coffee's new cold brew cans, as one HTML page showing each banner at its real size: a 1200x628 social ad, a 1080x1080 square post, a 728x90 leaderboard, and a 1600x500 website hero. Price $3.50 a can, in stores June 1.”
Skill commit: bf41cbc

Without the skillWith banner-design

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

Download the with-skill page

canvas-design

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

Category: Design
Source: anthropics/skills
License: Not stated
Proof model: claude-opus-5-5
Brief: “Build the one-page site for Blue Hour, a monthly jazz night at a small club: a poster-style hero with a drawn inline SVG illustration, the lineup with short bios, the schedule, a photo-strip section drawn with SVG, ticket tiers, and a footer with the address. Make it feel like a printed poster brought to the web, with motion.”
Skill commit: dbd4588

Without the skillWith canvas-design

⇆

Without, runWith canvas-design, 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 banner-design or alternatives to canvas-design.