Guides popup and modal design for conversion. Well-designed popups can achieve up to 25% conversion; poorly timed or intrusive ones hurt UX and SEO. Google penalizes intrusive mobile popups.
When invoking
On
first use
, if helpful, open with 1-2 sentences on what this skill covers and why it matters, then provide the main output. On
subsequent use
or when the user asks to skip, go directly to the main output.
Initial Assessment
Check for product marketing context first:
If
.claude/product-marketing-context.md
or
.cursor/product-marketing-context.md
exists, read it for offers and audience.
Identify:
Goal
Newsletter, discount, lead magnet, demo
Trigger
Time delay, scroll %, exit intent, click
Mobile
Critical; smaller screens = easier to interrupt
Best Practices
Timing and Context
Avoid
Popup on page load; users hate it
Prefer
After engagement (scroll 25-50%, time on page, exit intent)
Offer genuine value; act as "helpful teammate" not spam
Design
Short copy
Clear headline, one benefit, single CTA
Visual hierarchy
Guide attention to CTA; don't distract
Easy exit
Clear X, visible "No Thanks"; friction-free exit increases trust and conversion
Brand consistency
Build instant comfort
Mobile
Size
Fit screen; thumb-friendly close
Lightweight
Avoid heavy assets; affects LCP
SEO
Google penalizes intrusive interstitials; avoid full-page takeover on mobile
Avoid
Dark patterns (fake close, hidden options)
Too early or too frequent
Multiple popups in one session
Blocking content without clear value
Triggers
Trigger
Use
Time delay
5-15s typical; after some engagement
Scroll %
25-50% read; user invested
Exit intent
Mouse leaving viewport; last chance
Click
User-initiated; least intrusive
Output Format
Offer
and copy
Trigger
(timing, scroll, exit intent)
Design
(size, CTA, exit)
Mobile
checklist