Does it cover both container and item-level properties?

Yes, both flex container settings (direction, wrap, justify, align) and individual item properties (grow, shrink, basis) are adjustable.

Can I preview the layout before copying the code?

Yes, you see a live preview as you adjust settings, so you know exactly what the generated CSS will produce.

Is the generated CSS compatible with all modern browsers?

Yes, standard Flexbox properties are well-supported across all modern browsers.

Does CSS Flexbox Generator upload my files to a server?

No. CSS Flexbox Generator runs entirely in your browser using on-device processing, your files never leave your device.

CSS Flexbox Generator

Visually build a CSS Flexbox layout and copy the code.

Runs in your browser

Direction

Wrap

Justify content

Align items

Gap

Preview items

CSS

display: flex;
flex-direction: row;
flex-wrap: nowrap;
justify-content: flex-start;
align-items: stretch;
gap: 12px;

About this tool

Flexbox has enough properties and interacting behaviors (direction, wrap, justify, align, grow/shrink) that predicting the exact visual result from code alone takes real experience — building visually and seeing the immediate result is faster for most layouts. This tool lets you visually build a CSS Flexbox layout and copy the generated code, giving you working Flexbox CSS without needing to mentally simulate how the properties interact.

Frequently asked questions

CSS Grid Generator

Visually build a CSS Grid layout and copy the code.

CSS Minifier & Formatter

Minify CSS for production or format it for readability.

File Converter

Convert data files between CSV, JSON and TSV.

Hot

JSON Formatter

Format, validate and minify JSON.

Base64 Converter

Encode or decode text and files as Base64.

Base32 Encoder/Decoder

Encode or decode text as Base32.

ULID Generator

Generate sortable, timestamp-based ULIDs.

Semver Parser/Comparator

Parse and compare two semantic version numbers.

.env File Parser/Validator

Parse a .env file and flag duplicate keys, missing values and invalid names.

Markdown Table Generator

Build a Markdown table with a spreadsheet-style editor.

Color Blindness Simulator

Preview an image as seen with different types of color blindness.

URL Encoder/Decoder

Encode or decode URLs and query strings.

PDF Tools

Merge, split, compress and convert PDF files.

Image Tools

Compress, resize, crop and convert images.

Link & QR Tools

Shorten links and generate QR codes and barcodes.

Audio Tools

Convert audio files and turn text into speech, or speech into text.

Video Tools

Compress and process video files, right in your browser.

SEO & Web Tools

Meta tags, sitemaps, schema markup and other on-page SEO utilities.

Data & Spreadsheet Tools

Clean, convert and inspect CSV, TSV and tabular data.

File Tools

Archive, inspect and convert files, right in your browser.

Business Tools

Invoices, quotations, receipts and other business documents.

Social Media Tools

Resize images for social platforms, count hashtags and preview posts.