Initial Assessment
Format Selection Matrix
Trigger Engineering
Audience Targeting
Frequency and Suppression Rules
Popup Copy Architecture
Strategy by Business Type
Mobile Popup Design
Compliance Requirements
Multi-Popup Conflict Resolution
A/B Test Framework
Metrics and Benchmarks
Output Artifacts
Related Skills

Clarify First

Before designing the popup, settle the inputs below. When one is missing or vague and would change the result, ask about it; when it wouldn't, use a sensible default and say which one you used.

Popup purpose: lead capture, promotion, announcement, or feedback (selects format and trigger).
Existing popups running: needed for multi-popup conflict and priority resolution.
Visitor + device mix: new vs returning, mobile vs desktop (drives targeting and mobile-safe format choice).
Compliance regime: GDPR/CCPA consent requirements (constrains data capture and consent UX).

Ask about the two or three inputs that matter most for this request, not the whole list. If the user wants a result straight away, produce it and state your assumptions at the top.

Initial Assessment

Required Context

Question	Why It Matters
What is the popup purpose? (lead capture, promotion, announcement, feedback)	Determines format and trigger
What existing popups are running?	Conflict resolution needed
What traffic sources? (paid, organic, direct)	Targeting and trigger strategy
New vs returning visitor split?	Personalization opportunity
Mobile vs desktop traffic split?	Mobile compliance requirements
Current popup performance? (if exists)	Baseline for optimization
Any compliance requirements? (GDPR, CCPA)	Legal constraints on data capture

Format Selection Matrix

Format	Best For	Intrusiveness	Mobile Friendly	Conversion Rate
Center modal	High-value offers, exit intent	High	With adaptation	3-10%
Slide-in (corner)	Newsletter, content offers	Low	Yes	1-5%
Top bar	Announcements, promotions	Very low	Yes	0.5-2%
Bottom bar	Cookie consent, CTAs	Very low	Yes	0.5-2%
Full-screen overlay	Major promotions, welcome mats	Very high	No (Google penalizes)	2-8%
Inline expansion	Content upgrades within articles	Very low	Yes	2-7%
Exit-intent modal	Final capture attempt	Medium	Desktop only	2-5%

Format Decision Tree

What is the goal?
├── Lead capture (email)
│   ├── Blog/content page → Slide-in (scroll trigger) or inline expansion
│   ├── Landing page → Exit-intent modal
│   └── Homepage → Time-delayed center modal
├── Promotion/discount
│   ├── E-commerce → Center modal (entry or timed)
│   └── SaaS → Top bar with countdown
├── Announcement
│   ├── New feature → Top bar (sticky)
│   └── Event/webinar → Slide-in or center modal
└── Feedback/survey
    └── Post-interaction → Slide-in (bottom corner)

Trigger Engineering

Trigger Types and Use Cases

Trigger	How It Works	Best For	Risk
Exit intent	Mouse moves toward browser close/back	Last-chance capture	Desktop only
Time delay	Appears after N seconds	Low-commitment offers	Too early = annoying
Scroll depth	Appears at N% scroll	Content-engaged visitors	Must calibrate to content length
Page count	Appears after N page views	Multi-visit engagement	Requires cookie tracking
Click trigger	User clicks a specific element	Lead magnets, CTAs	Requires obvious trigger element
Inactivity	No interaction for N seconds	Re-engagement	Can feel intrusive

Optimal Trigger Settings

Trigger	Setting	Rationale
Time delay	15-30 seconds	< 10s feels aggressive, > 60s misses visitors
Scroll depth	50-70%	User has consumed enough content to be engaged
Page count	2-3 pages	Visitor has shown interest beyond a single page
Exit intent	Mouse leaves viewport	Last opportunity before they leave
Click trigger	Prominent CTA button or text link	Explicit user intent

Trigger Combinations

Layer triggers for better targeting:

Combination	When to Use
Scroll 50% + Time 20s	Ensures both engagement and time on page
Page count 3 + Exit intent	Only show to visitors who have browsed multiple pages and are leaving
Click trigger + Email not captured	Only show form to non-subscribers

Audience Targeting

Segmentation Rules

Segment	Popup Strategy
New visitors (first visit)	Welcome offer, newsletter signup, content upgrade
Returning visitors (2-5 visits)	Deeper offer, free trial, demo request
Returning visitors (5+ visits)	Direct CTA, consultation offer
Email subscribers	Never show email capture popup
Existing customers	Feature announcements, upgrade offers only
Paid traffic visitors	Message-matched offer, no generic popup
Mobile visitors	Non-intrusive format only (slide-in or bottom bar)

Exclusion Rules

Always exclude these segments from popups:

Users who already converted (subscribed, signed up, purchased)
Users who dismissed the same popup in this session
Users who dismissed the same popup in the last 7 days
Users in the checkout or payment flow
Users on legal/compliance pages (privacy, terms)

Frequency and Suppression Rules

Frequency Caps

Rule	Setting	Rationale
Max popups per session	1	Multiple popups per visit destroys trust
Cooldown after dismissal	7 days minimum	Respect the user's "no"
Cooldown after close (X button)	3-7 days	Less aggressive than dismissal
Max popups per month	3-4	More than this and users feel harassed
Post-conversion suppression	Permanent for that popup type	Never ask again once they converted

Suppression Priority

If multiple popups compete for the same user in the same session, use this priority:

Priority	Popup Type	Why
1	Cookie consent / legal	Required by law
2	Exit intent (if triggered)	Last chance, highest intent signal
3	Time-delayed / scroll-triggered	Planned engagement
4	Announcement bar	Lowest priority, always available

Popup Copy Architecture

Anatomy of High-Converting Popup Copy

HEADLINE: What they get (benefit-focused, 6-10 words)
SUBHEADLINE: Why they should care (supporting detail, 1 sentence)
[FORM: Minimum fields]
[PRIMARY CTA: Action-oriented, 2-4 words]
[DECLINE TEXT: Respectful, neutral, 3-6 words]
[TRUST ELEMENT: Privacy or social proof, 1 line]

Copy Examples by Type

Newsletter Signup:

Headline: "Get Weekly Growth Tactics"
Subheadline: "Join 15,000 marketers who get our Tuesday newsletter"
CTA: "Subscribe"
Decline: "No thanks"
Trust: "Unsubscribe anytime. No spam."

Content Upgrade:

Headline: "Get the Full SEO Checklist"
Subheadline: "85 checks organized by priority. PDF download."
CTA: "Send Me the Checklist"
Decline: "I'll skip it"
Trust: "Free. No credit card required."

Exit Intent (E-commerce):

Headline: "Wait -- 15% Off Your First Order"
Subheadline: "Use code WELCOME15 at checkout"
CTA: "Claim My Discount"
Decline: "I'll pay full price"
Trust: "Valid for 24 hours"

Decline Text Rules

Never use shame language ("No, I don't want to save money")
Keep it neutral: "No thanks", "Maybe later", "Not now", "I'll skip it"
Font size should be readable (not tiny text designed to be missed)
Position clearly below or beside the CTA

Strategy by Business Type

E-commerce

Popup	Trigger	Offer
Welcome discount	Entry (new visitors, 5-second delay)	10-15% off first order
Exit intent	Mouse exit on product/cart page	Higher discount or free shipping
Cart abandonment	Return visit after cart abandonment	Reminder + incentive
Post-purchase	Thank you page	Referral offer or cross-sell

B2B SaaS

Popup	Trigger	Offer
Content upgrade	Scroll 50% on blog post	Related PDF, checklist, template
Demo request	Pricing page exit intent	"Talk to sales" with calendar link
Newsletter	Blog, 3rd page view	Weekly insights email
Feature announcement	Login, existing users	New feature with CTA to try it

Content / Media

Popup	Trigger	Offer
Newsletter	Scroll 60% on article	"Get articles like this weekly"
Content gate	After 3 free articles	Subscription or email for access
Social follow	Scroll bottom of article	Follow on social platforms

Mobile Popup Design

Google Intrusive Interstitials Policy

Google penalizes mobile pages that show intrusive interstitials. Avoid:

Full-screen popups that cover the main content
Popups that the user must dismiss before accessing content
Above-the-fold layouts where the popup pushes content below the fold

Mobile-Safe Formats

Format	Mobile Safe?	Notes
Bottom bar	Yes	Small, non-blocking
Top bar	Yes	Small, dismissable
Slide-in (small)	Yes	Corner, < 30% of screen
Center modal (small)	Conditional	Only if easily dismissable and shown after engagement
Full-screen overlay	No	Penalized by Google
Exit intent	N/A	Not available on mobile

Mobile Design Rules

Touch targets minimum 44x44px for close button and CTA
Close button (X) must be clearly visible and easily tappable
Popup must not cover more than 50% of the screen
Form inputs must trigger appropriate mobile keyboards
Test on actual mobile devices (not just responsive preview)

Compliance Requirements

GDPR (EU)

Checkbox for consent (pre-checked is not valid consent)
Clear privacy policy link
State what you will do with their email
Easy unsubscribe in all subsequent emails
Data processing purpose must be specified

CCPA (California)

"Do Not Sell My Personal Information" link if applicable
Privacy policy must be accessible
Users can request data deletion

CAN-SPAM (US)

Must honor unsubscribe requests within 10 business days
Must include physical address in emails
Subject lines cannot be deceptive

Cookie Consent (EU/UK)

Cookie consent banner takes priority over all other popups
Must not set non-essential cookies before consent
Must offer granular consent options

Multi-Popup Conflict Resolution

Priority System

If your site runs multiple popups, implement these rules:

Legal popups first -- Cookie consent before any other popup
One popup per session -- After legal popup, only one marketing popup
Priority ranking -- Exit intent > Scroll-triggered > Time-delayed > Announcement bar
No stacking -- Never show two popups simultaneously
Queue system -- If multiple popups qualify, show highest priority and suppress the rest for this session

Implementation Rules

Maintain a global popup state manager
Each popup checks the state before rendering
Record which popups the user has seen, dismissed, or converted on
Share state across tabs if possible (localStorage)

A/B Test Framework

High-Impact Tests

Test	Hypothesis	Metric
Trigger timing (15s vs 30s vs scroll)	Scroll trigger captures more engaged users	Conversion rate + bounce rate
Offer type (discount vs content)	Content offers attract higher-quality leads	Conversion rate + lead quality
Copy variation (benefit vs urgency)	Benefit-focused converts better long-term	Conversion rate
Format (modal vs slide-in)	Slide-in has lower bounce impact	Conversion rate + bounce rate
Decline text (neutral vs shame-free)	Neutral decline text maintains trust	Brand sentiment + repeat visits

Test Rules

Run each test for minimum 1,000 impressions per variant
Track both popup conversion rate AND page-level metrics (bounce, time on page)
A popup that converts 10% but increases bounce by 20% is a net negative

Metrics and Benchmarks

Key Metrics

Metric	Formula	Benchmark
Popup conversion rate	Conversions / Impressions	2-5% (good), 5-10% (excellent)
Popup view rate	Impressions / Eligible page views	Depends on trigger settings
Bounce rate impact	Bounce rate with popup - without	Should be < 5% increase
Email quality score	Popup leads who engage / Total popup leads	> 30% open subsequent emails
Revenue per popup lead	Revenue from popup leads / Total popup leads	Compare to other lead sources

Output Artifacts

Artifact	Format	Description
Popup Strategy Map	Type x trigger x audience x frequency table	Complete popup inventory with conflict rules
Complete Copy Set	Per-popup copy	Headline, subheadline, CTA, decline text, trust element
Mobile Adaptation Guide	Per-format recommendations	Mobile-safe formats, sizing, dismiss behavior
Compliance Checklist	Per-regulation requirements	GDPR, CCPA, CAN-SPAM, cookie consent
A/B Test Plan	Prioritized table	Hypotheses ranked by expected impact
Multi-Popup Priority Map	Priority ranking	Conflict resolution rules for concurrent popups

Tool Reference

1. popup_strategy_auditor.py

Audits existing popup configurations for compliance, frequency conflicts, targeting gaps, and mobile safety. Reads a JSON inventory of popups and flags issues against best practices.

python scripts/popup_strategy_auditor.py popups.json --format text
python scripts/popup_strategy_auditor.py popups.json --format json

Flag	Type	Description
`popups.json`	positional	Path to JSON file with popup inventory and rules
`--format`	optional	Output format: `text` (default) or `json`

2. popup_ab_test_calculator.py

Calculates statistical significance for popup A/B tests. Takes impressions and conversions for control and variant, computes conversion rates, relative lift, confidence level, and recommends whether to ship, continue testing, or abandon.

python scripts/popup_ab_test_calculator.py test.json --format text
python scripts/popup_ab_test_calculator.py test.json --format json

Flag	Type	Description
`test.json`	positional	Path to JSON file with A/B test data
`--format`	optional	Output format: `text` (default) or `json`

3. popup_roi_estimator.py

Estimates revenue impact of popup lead capture by modeling lead volume, conversion rates, and customer lifetime value. Compares popup-sourced leads against other channels.

python scripts/popup_roi_estimator.py roi_data.json --format text
python scripts/popup_roi_estimator.py roi_data.json --format json

Flag	Type	Description
`roi_data.json`	positional	Path to JSON file with popup performance and revenue data
`--format`	optional	Output format: `text` (default) or `json`

Troubleshooting

Problem	Likely Cause	Resolution
Popup conversion rate below 2%	Wrong trigger timing, weak offer, or poor copy	Test scroll-triggered (50-70%) vs time-delayed; use benefit-focused headline; add countdown timer (lifts to 14.4% avg per 2026 benchmarks)
Bounce rate increases >5% after adding popup	Popup fires too early or covers too much screen on mobile	Increase time delay to 15-30s or switch to scroll trigger; use slide-in format instead of center modal
Email list quality drops (low open rates from popup leads)	Generic offer attracts low-intent subscribers	Switch to content upgrade offers specific to the page; add qualification question
Multiple popups fire in same session	No global popup state manager or priority system implemented	Implement session-level state tracking via localStorage; enforce one-popup-per-session rule with priority ranking
Mobile popup triggers Google penalty	Full-screen overlay or popup covers content before engagement	Switch to bottom bar, slide-in (<30% screen), or inline expansion format; test with Google Mobile-Friendly Tool
Exit-intent not working on mobile	Exit-intent relies on mouse movement which does not exist on mobile	Use scroll-up or inactivity trigger as mobile alternative; segment trigger rules by device type
Cookie consent popup conflicts with marketing popup	No priority system; both fire simultaneously	Legal popups always take priority; queue marketing popup to fire only after consent is given

Success Criteria

Popup conversion rate reaches 3-5% (good) or 5-10% (excellent) within 30 days of optimization
Bounce rate impact stays below 5% increase compared to no-popup baseline
Email lead quality maintains >30% open rate on subsequent emails from popup-sourced leads
Mobile popup compliance passes Google Mobile-Friendly Test with zero warnings
Frequency capping limits impressions to max 1 per session and 3-4 per month per user
Zero GDPR/CCPA compliance violations in popup consent flows
Gamified or countdown-enhanced popups reach 13%+ average conversion rate (2026 benchmark)

Scope & Limitations

In scope: Popup and modal format selection, trigger engineering, audience targeting, frequency capping, copy architecture, mobile-safe design, multi-popup conflict resolution, compliance requirements (GDPR, CCPA, CAN-SPAM, cookie consent), and structured A/B testing for lead capture, promotional, announcement, and feedback popups.

Out of scope: Form field-level optimization within popups (use form-cro), page-level conversion optimization around the popup (use page-cro), in-app onboarding modals and tooltips (use onboarding-cro), registration flows triggered by popups (use signup-flow-cro). Scripts operate on local data only -- no integrations with popup platforms (OptinMonster, Wisepops, etc.) or analytics tools.

Limitations: Conversion benchmarks are aggregate industry averages from 2025-2026 studies (Popupsmart 10K+ campaigns, Wisepops 1B+ displays) and vary significantly by industry, traffic source, and offer type. Exit-intent detection is desktop-only; mobile alternatives (scroll-up, inactivity) have different performance characteristics. Google intrusive interstitial penalties apply to mobile search traffic specifically -- direct/paid traffic is less affected.

Integration Points

form-cro -- Popup form fields should follow form-cro field reduction and validation standards
page-cro -- Page conversion should be optimized before layering popups; popup performance depends on page quality
signup-flow-cro -- Popup-to-signup handoff should maintain context and pre-fill captured email
paywall-upgrade-cro -- In-app upgrade modals share frequency capping and UX principles with marketing popups
onboarding-cro -- Product onboarding tooltips and modals should use separate state management from marketing popups
referral-program -- Post-purchase or post-conversion popups can trigger referral program prompts

Related Skills

form-cro -- Use when the form inside the popup needs field-level optimization (field count, validation, layout).
page-cro -- Use when the page surrounding the popup needs conversion optimization. Fix the page first, then add popups.
onboarding-cro -- Use when popups/modals are part of in-app onboarding (tooltips, checklists, feature tours).
signup-flow-cro -- Use when the popup leads into a registration flow that needs optimization.

popup-cro

Popup CRO

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