# Flexbox Labs

> Visual web builder and code generator for CSS Flexbox and Grid layouts.

Flexbox Labs is an open-source visual playground for designing CSS Flexbox and Grid layouts directly in the browser. It lets you tweak container and item properties in real time, test pre-built templates, and instantly export the resulting HTML and CSS code.

Website: https://github.com/prazzon/Flexbox-Labs

## What it is for

- Prototype responsive Flexbox and Grid layouts visually before coding
- Generate clean HTML and CSS code for standard layout presets
- Learn and experiment with CSS container and item properties interactively

## Features

- Interactive real-time preview canvas
- Pre-built layout templates including masonry, grid, and multi-column designs
- Container and individual flex item property controls
- Item manipulation to add, duplicate, or delete layout elements
- Full undo and redo history for easy experimentation
- Exportable HTML and CSS markup ready to copy or download

## Pricing

Open source. Free and open source (MIT license)

## Details

- Type: Web app
- Category: [Development](https://xiry.app/topics/development.md)
- Open source: yes
- Platforms: Web, Self-hosted
- For: Front-end developers, web designers, and students learning CSS layout systems.
- Alternative to: CSS Grid Generator, Flexbox Froggy
- Tags: css, flexbox, css grid, code generator, frontend, developer tools

## Why it was saved

- [@denicmarko, 15 January 2026](https://x.com/denicmarko/status/2011765674507714864): Generates ready-to-use HTML, CSS or Tailwind for common layouts (header/sidebar/content/footer, masonry, grids) without hand-writing flex/grid rules.

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Updated 10 October 2026. Page: https://xiry.app/resources/flexbox-labs

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