designing-vizro-layouts

Design

Use this skill when designing or building Vizro dashboard layouts — grid configuration, component sizing, filter/parameter placement, selector types, or container patterns. Activate when the user is creating wireframes, defining page structure, placing controls, or sizing charts.

QUICK START

How to use this skill

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Review the proposed files and risks before you approve installation.

Prompt to paste

I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/mckinsey/vizro/blob/HEAD/vizro-e2e-flow/skills/designing-vizro-layouts/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/designing-vizro-layouts/. Do not write files or run scripts until I approve.

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Vizro Layout Guidelines

Core Rules

Use type: grid (not vm.Layout). Recommended: 12 columns, row_min_height: "140px".
Use -1 for empty cells. Every component must form a perfect rectangle in the grid.
Place 2–3 charts per row. Full-width only for time-series line charts.
Modifying existing layouts: Replicate the original structure and apply only the technical constraints below. See layout-guidelines.md for details.

Component Sizing (12-col grid, 140px rows)

Component	Columns	Rows	Height
KPI Card	2–3	1	140px
Small Chart	4	3	420px
Large Chart	6	4–5	560–700px
Table	12	4–6	560–840px

KPI cards: Place in the page Grid with equal columns and equal rows per card (e.g. 4 cards = 3 cols each). Use -1 for remaining empty cells. See layout-guidelines.md for the full KPI count lookup table and YAML examples. Charts need at least 2–3 rows to avoid looking squeezed.

Filter Placement

Page-level (left sidebar): filters shared across multiple components
Container-level (above container): filters scoped only to the components inside that container
Prefer Filters over Parameters. Do not set targets: by default — all components containing the specified column are automatically affected. Only set targets: when you want to limit which components are affected.

Selectors

Default: Just provide the column name to Filter or Parameter — Vizro auto-selects the appropriate selector based on the data type. Only override when the auto-selected selector doesn't fit:

Data type	Selector	Example
2–4 options	RadioItems	Region (N/S/E/W)
5+ options	Dropdown	Category (many)
Numeric range	RangeSlider	Price ($0–$1000)
Single number	Slider	Year (2020–2025)
Date	DatePicker	Order date
Multi-select	Checklist	Status (Active, etc.)

Deep Dive

Load layout-guidelines.md when you need: grid YAML examples (correct vs incorrect), flexible width distributions, container patterns (plain/filled/outlined), visual hierarchy principles, or Vizro platform constraints.