AOS/skills/design/design-templates/social-card-swiss/references/screenshot-treatment.md

Screenshot Treatment

When the user supplies an app / web / code / dashboard screenshot, do not drop it raw into a .frame-img. The aspect ratio mismatch crops UI and the harsh edge looks SaaS-y. Use .frame-shot instead — a sibling class added to both seed templates.

When to reach for it

• App / Web UI capture — anything with a status bar, tab bar, toolbar, or window chrome.
• Code / terminal screenshots.
• Dashboard / chart screenshots that need to keep every label readable.
• IDE captures where text density matters more than composition.

For photographic content (people, scenery, products) — keep using .frame-img. The treatments below assume a pixel-perfect UI source where contain-fit is non-negotiable.

Subject Prep

Before framing, decide what the actual screenshot subject is. If the source capture contains a floating modal/card over an unrelated page, desktop chrome, cropped side text, cursor trails, notification fragments, or leftover background UI, crop to the foreground window/card first and then place that cleaned subject into the stage. Do not beautify the entire raw capture when it carries accidental text or partial UI behind the subject.

Screenshot beautification must not introduce perspective, skew, rotation, or 3D tilt unless the user explicitly asks for a mockup scene. A CleanShot-style treatment is orthographic: straight subject, equal scaling, quiet background, and clear safe padding.

Anatomy

.frame-shot.r-{ratio}.corners-{sq|sm|md}.shadow-{none|soft|ed}.bg-{paper|grid|dot|grey-1|ink}.inset-{none|sub|bal}
  └─ <img src="…">         (object-fit: contain by default)

Optional wrapping:

.device-browser
  └─ .frame-shot.r-16x10.bg-paper
       └─ <img>

.device-phone
  └─ .frame-shot.r-3x4.bg-paper
       └─ <img>

Parameters

Pick six values before writing the markup. Treat this like the M16 cover decision tree — pick once, don't fiddle mid-build.

1. r-* ratio (required, matches slot)

Class	Use
r-16x10	Default for app / web shots, looks like a real window
r-16x9	Landscape video / dashboard / wide chart
r-4x3	Classic desktop window, legacy app
r-3x2	DSLR-style — only if the source is photographic UI mockup
r-1x1	App icon / square widget
r-3x4	Mobile portrait shot (pair with .device-phone)
r-21x9	Multi-monitor / ultra-wide / WeChat hero

2. corners-* (style-locked default)

• Swiss default: corners-sq. Use corners-sm only if the slot has surrounding shadow or chrome.
• Editorial default: corners-sm (6 px). Bump to corners-md (14 px) for "cutout" feel on paper.

Never go above 14 px — anything bigger reads as iOS marketing.

3. shadow-* (style-locked default)

• Swiss → shadow-none 90% of the time. shadow-soft only on screenshots that float on bg-grid / bg-dot. shadow-ed adds a 1px outline as part of the shadow — reserve for hero shots.
• Editorial → shadow-soft on bg-paper-2 is the warm default. shadow-ed for hero shots.

4. bg-* (the screenshot "stage")

Token	Swiss role	Editorial role
bg-paper	Default plain stage	Same
bg-paper-2	n/a	Default warm stage
bg-grey-1	Default plain stage	n/a
bg-grid	Engineering / data	Field-notes engineering
bg-dot	Subtle structure	Subtle structure
bg-ink	Dark-mode UI shot	Dark-mode UI shot

Backgrounds are never accent-coloured. If the screenshot needs an accent emphasis, add a .t-cat chip or .kicker next to it — don't tint the stage.

Solid bg-* vs asset bg-asset-*

The tokens above are CSS-generated solids — flat tones, fast, no asset dependency. They work, but for code / IDE / dashboard / dense-UI captures they can feel undersold. Ported from the PPT skill, both seed templates also ship 9 real texture WebP backgrounds under assets/screenshot-backgrounds/. Reach for these when the screenshot is the page's hero, when a solid stage feels too thin, or when you need the warmth/grain of a printed magazine.

Editorial assets (assets/screenshot-backgrounds/style-a/):

Class	Tone	Best for
bg-asset-dune	Warm sand	Travel / outdoor app shots, lifestyle products
bg-asset-forest-ink	Deep forest green	Dark-mode UI on Editorial — pairs with ink-classic
bg-asset-indigo-porcelain	Cool porcelain	Reading / writing apps, design tools
bg-asset-kraft-paper	Kraft brown	Notes / journaling / handwritten apps
bg-asset-monocle-classic	Cream paper	Default warm hero — most magazine-like

Swiss assets (assets/screenshot-backgrounds/style-b/):

Class	Accent	Use only when current accent matches
bg-asset-ikb-dot	IKB Klein Blue	data-accent="ikb" decks only
bg-asset-lemon-green-dot	Lemon-green	data-accent="lemon-green" decks only
bg-asset-lemon-grid	Lemon-yellow	data-accent="lemon" decks only
bg-asset-safety-orange	Safety orange	data-accent="safety-orange" decks only

Rules of thumb

• Don't mix accents — a data-accent="ikb" deck must not pull a bg-asset-safety-orange stage.
• Asset backgrounds already carry texture; don't stack shadow-ed on top (the 1px outline will read as a SaaS frame). Use shadow-soft or shadow-none.
• Decide once per deck whether asset stages are part of the visual identity — don't sprinkle one asset background into a deck of solid stages, it looks like a sample card.
• These assets are crop-safe at 16:10 and 16:9. For tall r-3x4 or square r-1x1 slots, prefer solid bg-* — the texture pattern can read awkwardly when over-cropped.

Path note: the .bg-asset-* rules use url("../assets/screenshot-backgrounds/...") — this assumes your deck's index.html lives one directory below assets/. If you place the deck elsewhere, override these rules locally with the correct relative path.

5. inset-* (padding between shot and stage)

• inset-none — image fills the frame. Use when the screenshot itself already has window chrome.
• inset-sub (Swiss 20 px / Editorial 24 px) — default. Lets the stage breathe.
• inset-bal (Swiss 48 px / Editorial 56 px) — when the shot is busy and needs to feel calm.

6. fit-cover (override)

Default is object-fit: contain — this is the whole point of .frame-shot. Only add .fit-cover when:

• The slot is a hero where exact pixels of the source don't matter (e.g. a code shot used as a background pattern).
• The user explicitly says they want the shot cropped.

Device chrome

Two wrapper classes ship with the seeds. They wrap a .frame-shot:

.device-browser

Adds a 32–36 px chrome bar with traffic-light dots. Use for web / desktop app captures.

<div class="device-browser">
  <div class="frame-shot r-16x10 bg-paper inset-none">
    <img src="assets/website.png" alt="Linear inbox">
  </div>
</div>

Pair with shadow-soft on the screenshot itself for a desk-photo feel.

.device-phone

Wraps a 3:4 or 16:10 shot in an ink-coloured bezel with 18-24 px rounded inner corners. Use for mobile captures.

<div class="device-phone">
  <div class="frame-shot r-3x4 bg-paper inset-none">
    <img src="assets/app.png" alt="WeChat detail">
  </div>
</div>

Don't stack corners-md on top of .device-phone — the bezel already rounds the inner shot.

Safe-area cropping

When the user delivers a full-screen capture (1290×2796 iOS / 1080×2400 Android / 1920×1080 desktop), do not show the status bar, dock, or browser tab strip unless that chrome is the subject. Crop before importing:

1. Trim the iOS / Android status bar (top 47-59 px on retina).
2. Trim the home indicator / nav gesture bar (bottom 34 px on iOS).
3. For desktop: trim everything above the page content unless wrapped in .device-browser.

If you can't crop ahead of time, use object-position: center 6% to bias the visible region downward — but this is a workaround, not the preferred path.

Style cheat-sheet

Two recipes that cover 80% of cases.

Swiss product demo — pure stage, no shadow:

.frame-shot.r-16x10.corners-sq.shadow-none.bg-grey-1.inset-bal

Editorial deep-dive — desk-photo warmth:

.frame-shot.r-16x10.corners-sm.shadow-soft.bg-paper-2.inset-sub

Editorial hero with real texture — magazine-grade stage:

.frame-shot.r-16x10.corners-sm.shadow-soft.bg-asset-monocle-classic.inset-bal

Swiss hero with brand-aligned stage — only when accent matches asset:

.frame-shot.r-16x10.corners-sq.shadow-none.bg-asset-ikb-dot.inset-bal

For comparison shots (before / after), use the same parameters on both — different treatment between cells reads as inconsistency, not contrast.

Validator

validate-social-deck.mjs doesn't have a screenshot-specific rule (yet). The existing R1 / R2 / R5 still apply: a .frame-shot that overflows or pushes the footer is still a fail.

If a deck mixes .frame-img and .frame-shot on the same poster, that's usually a smell — pick one approach per poster.