Screenshot Analysis

Overview

Extract precise, implementation-ready design tokens, components, and layout structure from screenshot images through a systematic eight-phase process. Every extraction must trace back to something observed in the screenshot, and every gap must be explicitly acknowledged.

When to Use

Analyzing a screenshot image to extract a design system
Building a color palette from an existing interface
Cataloging components visible in a UI screenshot
Identifying typography scale and hierarchy from a reference app
Measuring spacing patterns and grid structure from a screenshot
Producing implementation-ready tokens from visual inspiration

When NOT to Use

Designing from scratch without reference screenshots
Working from design files (Figma, Sketch) where tokens are already exported
Pure interaction design without visual analysis
When the user provides a design system spec and needs implementation only

Phase 1: Initial Assessment

Before extracting any tokens, establish the context of the interface.

Identify and document:

Attribute	What to Determine
Platform	Mobile (iOS/Android), web (desktop/responsive), desktop app
Design language	Material, iOS HIG, custom, hybrid
Layout approach	Single column, multi-column, sidebar+content, dashboard grid
Density	Compact (data-heavy), comfortable (standard), spacious (marketing)
Color mode	Light, dark, or mixed
Apparent era	Current design trends vs. dated patterns

Output format:

PLATFORM: [platform]
DESIGN LANGUAGE: [language]
LAYOUT: [approach]
DENSITY: [level]
COLOR MODE: [mode]
NOTES: [anything notable about the overall approach]

Phase 2: Color Extraction

Extract every distinguishable color. Organize by role, not by where it appears.

Extraction Process

Backgrounds first -- Identify every distinct background color. Number them from darkest to lightest (or lightest to darkest in dark mode).
Text colors -- Identify primary text, secondary text, muted/placeholder text, and any colored text.
Interactive elements -- Buttons, links, toggles, active states. Separate primary actions from secondary.
Semantic colors -- Success (green), warning (amber/yellow), error/destructive (red), info (blue). Note which are present and which are absent.
Accent and brand -- The dominant brand color. Any secondary accent.
Borders and dividers -- Often subtle. Zoom in mentally. Note opacity if borders appear semi-transparent.

Output Format

PRIMARY PALETTE:
  Brand Primary:    #XXXXXX  (observed in: [element])
  Brand Secondary:  #XXXXXX  (observed in: [element])

NEUTRAL PALETTE:
  Background Base:  #XXXXXX  (observed in: [element])
  Background Elevated: #XXXXXX  (observed in: [element])
  Surface:          #XXXXXX  (observed in: [element])
  Border Default:   #XXXXXX  (observed in: [element])
  Text Primary:     #XXXXXX  (observed in: [element])
  Text Secondary:   #XXXXXX  (observed in: [element])
  Text Muted:       #XXXXXX  (observed in: [element])

SEMANTIC PALETTE:
  Success:          #XXXXXX  (observed in: [element])
  Warning:          #XXXXXX  (observed in: [element])
  Error:            #XXXXXX  (observed in: [element])
  Info:             #XXXXXX  (observed in: [element])

ACCENT PALETTE:
  [role]:           #XXXXXX  (observed in: [element])

Every color entry MUST include the

(observed in: ...)

attribution. If a semantic color is not visible in the screenshot, omit it and note its absence in the gaps section.

Phase 3: Typography Identification

Identify every distinct typographic treatment visible in the screenshot.

Extraction Process

Scan top to bottom -- Note every text element, grouping by apparent visual hierarchy level.
Font family -- Identify the typeface. If uncertain, provide the closest match (e.g., "appears to be Inter or similar geometric sans-serif").
Size scale -- Measure relative sizes. Anchor to body text and express other sizes as ratios or estimated pixel values.
Weight scale -- Note distinct weights visible (regular, medium, semibold, bold).
Line height -- Estimate for body text and headings. Note whether headings use tighter line height than body.
Letter spacing -- Note any visible tracking differences (tight headings, wider labels, uppercase with extra tracking).
Special treatments -- Monospace for code, tabular numbers for data, italic for emphasis.

Output Format

FONT FAMILIES:
  Primary:    [family] (confidence: high/medium/low)
  Secondary:  [family] (confidence: high/medium/low)
  Monospace:  [family] (if present)

TYPE SCALE:
  Display:    ~[size]px / weight [N] / leading [N] (observed in: [element])
  Heading 1:  ~[size]px / weight [N] / leading [N] (observed in: [element])
  Heading 2:  ~[size]px / weight [N] / leading [N] (observed in: [element])
  Heading 3:  ~[size]px / weight [N] / leading [N] (observed in: [element])
  Body:       ~[size]px / weight [N] / leading [N] (observed in: [element])
  Caption:    ~[size]px / weight [N] / leading [N] (observed in: [element])
  Label:      ~[size]px / weight [N] / leading [N] (observed in: [element])
  Overline:   ~[size]px / weight [N] / leading [N] (observed in: [element])

LETTER SPACING:
  Headings: [value or "normal"]
  Labels:   [value or "normal"]
  Overline: [value or "normal"]

Mark all pixel values with

(approximate) unless the screenshot provides enough context for exact measurement. Note confidence level for font family identification.

Phase 4: Spacing Measurement

Extract the spacing system by identifying the base unit and its multipliers.

Extraction Process

Find the base unit -- Examine the smallest repeated spacing value. Common bases: 4px, 8px. Look at icon-to-text gaps, input padding, and tight element pairs.
Internal component spacing -- Padding inside buttons, cards, inputs, list items.
Between-element spacing -- Gaps between sibling elements (button groups, form fields, list items).
Section spacing -- Distance between major content sections.
Page margins -- Outer padding of the main content area.
Consistent vs. inconsistent -- Note whether spacing follows a strict scale or varies.

Output Format

BASE UNIT: [N]px

SPACING SCALE:
  2xs:  [N]px  ([base] x [multiplier]) — used for: [context]
  xs:   [N]px  ([base] x [multiplier]) — used for: [context]
  sm:   [N]px  ([base] x [multiplier]) — used for: [context]
  md:   [N]px  ([base] x [multiplier]) — used for: [context]
  lg:   [N]px  ([base] x [multiplier]) — used for: [context]
  xl:   [N]px  ([base] x [multiplier]) — used for: [context]
  2xl:  [N]px  ([base] x [multiplier]) — used for: [context]

COMPONENT PADDING PATTERNS:
  Buttons:     [top] [right] [bottom] [left]
  Cards:       [top] [right] [bottom] [left]
  Inputs:      [top] [right] [bottom] [left]
  List items:  [top] [right] [bottom] [left]

GAP PATTERNS:
  Form fields:    [N]px between fields
  Button groups:  [N]px between buttons
  Section gap:    [N]px between major sections

Phase 5: Component Cataloging

Identify and document every distinct UI component visible in the screenshot.

Extraction Process

For each component:

Name it -- Use standard terminology (button, input, card, badge, avatar, tab, etc.).
Count variants -- How many visual variants are visible? (primary/secondary/ghost button, filled/outlined input).
Identify states -- Which states are visible? (default, hover, active, disabled, focused, selected, error).
Measure it -- Height, padding, border-radius, font size, icon size.
Note composition -- What sub-elements does it contain? (icon + label, avatar + name + subtitle).

Output Format

For each component:

COMPONENT: [Name]
  Variants observed: [list]
  States visible: [list]
  States NOT visible: [list — mark as gap]
  Dimensions:
    Height: ~[N]px
    Padding: [values]
    Border radius: [N]px
    Font size: ~[N]px
    Font weight: [N]
    Icon size: [N]px (if applicable)
  Colors:
    Background: #XXXXXX
    Text: #XXXXXX
    Border: #XXXXXX (if applicable)
    Icon: #XXXXXX (if applicable)
  Composition: [sub-elements]
  Notes: [anything unusual or distinctive]

Common Component Checklist

Scan for each of these. Mark present or absent:

Button (primary, secondary, ghost, icon-only)
Text input / search bar
Dropdown / select
Checkbox / toggle / radio
Card / panel
Navigation bar / header
Sidebar / drawer
Tab bar / segmented control
List item / row
Badge / tag / chip
Avatar / icon
Modal / dialog
Toast / notification
Tooltip / popover
Divider / separator
Loading / skeleton state
Empty state

Phase 6: Layout Structure

Document the spatial organization and visual hierarchy of the interface.

Extraction Process

Grid system -- Identify columns, gutters, and margins. Note whether a standard grid (12-column) or custom layout is used.
Content hierarchy -- Rank content areas by visual prominence (size, position, contrast, whitespace).
Section mapping -- Divide the interface into named sections (header, sidebar, main content, footer, etc.).
Visual weight -- Note where the eye is drawn first, second, third. Identify what creates that hierarchy (size, color, contrast, position).
Alignment axes -- Identify the dominant alignment pattern (left-aligned, center-aligned, mixed).

Output Format

GRID:
  Type: [fixed/fluid/hybrid]
  Columns: [N]
  Gutter: ~[N]px
  Margin: ~[N]px
  Max width: ~[N]px (if constrained)

SECTION MAP:
  [Section name]: [position, approximate dimensions, role]
  [Section name]: [position, approximate dimensions, role]
  ...

VISUAL HIERARCHY (reading order):
  1. [Element/area] — draws attention via [mechanism]
  2. [Element/area] — secondary focus via [mechanism]
  3. [Element/area] — tertiary via [mechanism]

ALIGNMENT:
  Primary axis: [left/center/mixed]
  Notable breaks: [any deliberate alignment breaks]

CONTENT DENSITY:
  [Section]: [sparse/moderate/dense]

Phase 7: Border and Elevation

Document the depth strategy, border treatments, and shadow system.

Extraction Process

Border radii -- Measure distinct radius values. Note which components use which radius.
Border colors and widths -- Document border treatments. Note opacity if semi-transparent.
Shadow values -- Identify distinct shadow levels. Estimate offset, blur, spread, and color.
Elevation hierarchy -- Map which elements sit above which. Number the levels.
Divider patterns -- How are sections separated? (borders, spacing, background shifts, shadows).
Depth strategy -- Classify the overall approach: borders-only, subtle shadows, layered shadows, or surface shifts.

Output Format

DEPTH STRATEGY: [borders-only / subtle-shadows / layered-shadows / surface-shifts]

BORDER RADII:
  Small (buttons, inputs):  [N]px
  Medium (cards, panels):   [N]px
  Large (modals, sheets):   [N]px
  Full (avatars, pills):    [N]px (9999px / 50%)

SHADOWS:
  Level 1 (subtle):   [offset-x] [offset-y] [blur] [spread] [color]
  Level 2 (medium):   [offset-x] [offset-y] [blur] [spread] [color]
  Level 3 (elevated): [offset-x] [offset-y] [blur] [spread] [color]

BORDER TREATMENTS:
  Default: [width] [style] [color]
  Subtle:  [width] [style] [color]
  Strong:  [width] [style] [color]

ELEVATION MAP:
  Level 0: [elements at base level]
  Level 1: [elements floating above base]
  Level 2: [elements above level 1]
  Level 3: [highest elevation elements]

DIVIDER PATTERN: [description of how sections are separated]

Phase 8: Output Assembly

Compile all phase outputs into a single structured extraction document.

Assembly Process

Compile all phases -- Gather outputs from Phases 1-7 into a single document.
Cross-reference -- Verify color references in components match the color palette. Verify spacing values in components match the spacing scale.
Resolve conflicts -- If a component's measured padding does not match the spacing scale, note the discrepancy.
Document gaps -- Compile all acknowledged gaps into a single section.
Add implementation notes -- For each token category, add CSS custom property suggestions or Tailwind config hints.

Gaps Section (Required)

Every extraction MUST end with an honest gaps section:

KNOWN GAPS:
  Cannot determine from static screenshot:
  - [ ] Hover states for [components]
  - [ ] Focus ring styles
  - [ ] Animation/transition properties
  - [ ] Responsive breakpoint behavior
  - [ ] Touch target sizes (if mobile)
  - [ ] Scroll behavior
  - [ ] [Other gaps specific to this screenshot]

  Low confidence extractions:
  - [ ] [Item] — reason for low confidence
  - [ ] [Item] — reason for low confidence

Never fabricate values for gaps. State what is unknown and suggest how to obtain the missing information (e.g., "inspect the live app," "request additional screenshots at different viewport widths").

Implementation Hints (Optional)

When the user intends to implement the extracted system, include a CSS custom properties mapping or Tailwind configuration snippet. See references/implementation-templates.md for starter templates.

Common Mistakes

Mistake	Fix
Guessing hex values instead of acknowledging approximation	Prefix all color values with context; use `~` for uncertain sizes
Extracting colors without assigning roles	Every color must have a named role (primary, secondary, border, etc.)
Listing components without measuring them	Every component needs dimensions, padding, and radius values
Ignoring the spacing system	Identify the base unit first; express all spacing as multiples
Skipping the gaps section	Always document what cannot be determined from a static image
Treating all text sizes as a flat list	Organize into a hierarchical scale with named levels
Extracting shadows without noting the depth strategy	Classify the overall approach before listing individual shadow values
Providing vague font identification	State confidence level; suggest closest known match

Quality Checklist

Before delivering any screenshot analysis:

Completeness:

All 8 phases addressed
Initial assessment establishes platform and context
Color palette organized by role with attributions
Typography scale uses named hierarchy levels
Spacing scale identifies base unit and multipliers
Every visible component cataloged with measurements
Layout structure includes grid, hierarchy, and alignment
Border and elevation system documented

Precision:

All colors include hex values
All sizes include pixel estimates (with
```
~
```
where approximate)
Font families include confidence level
Component specs include dimensions, padding, radius, and colors
Spacing values traceable to base unit

Honesty:

Gaps section present and populated
No fabricated hover/animation/responsive values
Low-confidence extractions flagged
Missing component states explicitly noted

analysis-screenshot

NPX Install

Tags

SKILL.md Content

Screenshot Analysis

Overview

When to Use

When NOT to Use

Phase 1: Initial Assessment

Phase 2: Color Extraction

Extraction Process

Output Format

Phase 3: Typography Identification

Extraction Process

Output Format

Phase 4: Spacing Measurement

Extraction Process

Output Format

Phase 5: Component Cataloging

Extraction Process

Output Format

Common Component Checklist

Phase 6: Layout Structure

Extraction Process

Output Format

Phase 7: Border and Elevation

Extraction Process

Output Format

Phase 8: Output Assembly

Assembly Process

Gaps Section (Required)

Implementation Hints (Optional)

Common Mistakes

Quality Checklist