Flexbox generator. Create flexbox layouts visually with direction, alignment, wrapping, and item property controls.
100% browser-based — your data never leaves your device
Create flexbox layouts visually with alignment, direction, and wrapping controls.
.flex-container {
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
flex-wrap: nowrap;
gap: 8px;
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Flexbox Generator is a free online design tool that create flexbox layouts visually with alignment, direction, and wrapping controls. It works entirely in your browser — no downloads, no installations, and no server uploads required. UI/UX designers, frontend developers, marketing teams use Flexbox Generator when they need a fast, privacy-respecting way to process design data without installing additional software. It supports capabilities such as visual controls, item properties, live preview. Additional features include css export. Common use cases include centering content vertically and horizontally within a container, building responsive navigation bars and toolbar layouts, creating equal-height card rows with flexible item sizing. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Flexbox Generator ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Flexbox Generator is a free online design tool that helps you create flexbox layouts visually with alignment, direction, and wrapping controls. Key capabilities include visual controls, item properties, live preview. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to centering content vertically and horizontally within a container.
Configure flex-direction, justify-content, align-items, flex-wrap, and gap using the visual controls.
Set per-item flex-grow, flex-shrink, flex-basis, and align-self values for precise control.
Once satisfied, copy the generated CSS for both the flex container and its items.
| Category | Details |
|---|---|
| Input Limits | Maximum output complexity: Browser memory bound |
| Color precision: 32-bit RGBA (16.7M colors + alpha) | |
| Supported Formats | CSS, SCSS variables, Hex / RGB / HSL / OKLCH color formats |
| Browser Engine |
|
All operations run entirely in your browser using built-in Design APIs. No server uploads, no data storage, and no third-party requests.
Flexbox Generator is ideal when you need to centering content vertically and horizontally within a container without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For one-off tasks and quick processing, Flexbox Generator is faster than setting up a local development environment or using a command-line tool.
No. Flexbox Generator processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
Flexbox is a one-dimensional layout system for distributing space and aligning items along a row or column. It excels at component-level layouts like navigation bars, card rows, and centering.
justify-content aligns items along the main axis (horizontal by default). align-items aligns items along the cross axis (vertical by default).
Configure flex-direction, justify-content, align-items, flex-wrap, and gap with sliders.
Set per-item flex-grow, flex-shrink, flex-basis, and align-self values.
See flexbox changes reflected instantly in the preview panel.
Copy the generated flexbox CSS for container and items.
Flexbox Generator is useful in a variety of scenarios across different workflows:
Centering content vertically and horizontally within a container
Building responsive navigation bars and toolbar layouts
Creating equal-height card rows with flexible item sizing
The most common Flexbox use case is centering items. Set display: flex, align-items: center, justify-content: center on the parent to perfectly center child content.
Enable flex-wrap to allow items to flow to the next line on small screens. Combine with flex-basis for responsive behavior without media queries.
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