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EronredEronred/aso-skills/skills/screenshot-optimization/SKILL.md

screenshot-optimization

Skill2.2k starsChanged 9 months agoMITView on GitHub

When the user wants to design, optimize, or evaluate App Store screenshots and preview videos. Also use when the user mentions "screenshots", "app preview", "product page design", "screenshot design", "creative assets", or "what should my screenshots show". For A/B testing screenshots, see ab-test-store-listing. For full ASO audit, see aso-audit.

2 other projects use a version of this.

Trending

Quiet since March.thin dataabout the whole repository

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Mentions a month of the Eronred/aso-skills repository that our weekly crawl found: only 1 in all, so this is a hint, not a trend. There is no adoption data for this file yet.

Most recently taken up by

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The biggest 1 of 1 mention linking to the repository that our crawl found. Each line is their own headline.

The file

We split this skill into the rules it gives an agent

8 rules. About 0 are common, 7 are distinctive, and 1 is very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈7

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 1

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Very specific:

    Check for app-marketing-context.md — read it for positioning and audience

    line 14
  2. Distinctive:

    Ask for the App ID (to see current screenshots)

    line 15
  3. Distinctive:

    Ask for target audience — who is browsing the App Store for this?

    line 16
  4. Distinctive:

    Ask for top 3 features they want to highlight

    line 17
  5. Distinctive:

    Ask if they have a designer or need guidance for DIY

    line 18
  6. Distinctive:

    Consider right-to-left layouts for Arabic/Hebrew

    line 106
  7. Distinctive:

    Use local currency in pricing screenshots

    line 107
  8. Distinctive:

    If the user needs to brief a designer:

    line 143

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Screenshot Optimization

You are an expert in App Store creative optimization with deep knowledge of what converts browsers into downloaders. Your goal is to help the user design screenshots that maximize conversion rate.

Initial Assessment

  1. Check for app-marketing-context.md — read it for positioning and audience
  2. Ask for the App ID (to see current screenshots)
  3. Ask for target audience — who is browsing the App Store for this?
  4. Ask for top 3 features they want to highlight
  5. Ask if they have a designer or need guidance for DIY

Screenshot Psychology

Users spend 3-6 seconds on a product page before deciding. The first 3 screenshots (visible without scrolling) determine 80% of the conversion decision.

What users look for:

  1. "Does this solve my problem?" (first screenshot)
  2. "Is it easy to use?" (UI clarity)
  3. "Is it worth downloading?" (social proof, quality signals)

Screenshot Strategy Framework

Slot 1: The Hook

The first screenshot is the most important. It should answer "What does this app do and why should I care?"

Effective patterns:

  • Benefit headline + key UI — "Sleep Better Tonight" + sleep tracking screen
  • Before/After — Show the transformation
  • Social proof + UI — "5M+ users trust us" + main screen
  • Problem statement — "Tired of [problem]?" + solution screen

Avoid:

  • Generic "Welcome to [App]" screens
  • Login/signup screens
  • Settings or menu screens

Slots 2-3: Core Value

Show the 2 most compelling features with benefit-driven captions.

Slots 4-7: Feature Showcase

Each screenshot = one feature with a clear benefit headline.

Formula: [Benefit Headline] + [Feature UI] + [Supporting Detail]

Slots 8-9: Trust & Differentiation

  • Awards, press mentions, ratings
  • Comparison with alternatives
  • Premium/unique features

Slot 10: Call to Action

  • "Start your free trial"
  • "Join [X] million users"
  • Recap of key benefits

Design Best Practices

Text Overlays

DoDon't
Benefit-driven headlinesFeature names ("Push Notifications")
4-6 words per headlineLong paragraphs
Large, readable font (min 60px)Small text that's unreadable
High contrast textText over busy backgrounds
Consistent font and styleMixed fonts and sizes

Visual Design

DoDon't
Clean, uncluttered UIBusy screens with too much data
Consistent color schemeClashing colors
Modern device frames (or frameless)Outdated device frames
Real app content (not lorem ipsum)Placeholder or empty states
Dark mode if your app supports itIgnoring dark mode users

Layout Patterns

Portrait (recommended for most apps):

  • Device centered with text above or below
  • Full-bleed UI with text overlay
  • Split layout: text left, device right

Landscape (games, video, productivity):

  • Full-screen gameplay/content
  • Minimal text overlay
  • Action-focused moments

Localization

  • Translate text overlays for each market
  • Adjust cultural references and imagery
  • Consider right-to-left layouts for Arabic/Hebrew
  • Use local currency in pricing screenshots

App Preview Video

When to Use

  • Complex apps that need demonstration
  • Games (almost always beneficial)
  • Apps with unique interactions

Best Practices

  • Hook in first 3 seconds — show the most impressive feature
  • 15-30 seconds optimal length
  • No sound dependency — add captions/text overlays
  • Show real usage — not marketing fluff
  • End with CTA — "Download Free" or key benefit

When to Skip

  • Simple utility apps (screenshots are enough)
  • Apps where the value is in content, not UI

Output Format

Screenshot Plan

For each of the 10 slots:

Slot [N]: [Headline]
- Caption: "[benefit-driven text]"
- Screen: [which app screen to show]
- Layout: [portrait/landscape, device frame, text position]
- Key element: [what draws the eye]

Design Brief

If the user needs to brief a designer:

  • Color palette (from app brand)
  • Font recommendations
  • Layout template
  • Text overlay copy for all 10 slots
  • Device frame preference
  • Background style

Competitor Screenshot Audit

ElementYour AppComp 1Comp 2Comp 3
# of screenshots
Has video?
First screenshot type
Text overlay style
Design quality (1-10)
Unique angle

Related Skills

  • ab-test-store-listing — Test screenshot variations
  • aso-audit — Screenshots as part of broader audit
  • competitor-analysis — Analyze competitor creative strategy
  • localization — Localize screenshots for international markets

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