xiry.

Development · Web app

Flexbox Labs

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

From the Xiry library · Updated 10 October 2026

Visit github.com ↗

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.

What it's 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
Topic
CSS Tools
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: Generates ready-to-use HTML, CSS or Tailwind for common layouts (header/sidebar/content/footer, masonry, grids) without hand-writing flex/grid rules.

Related

Updated