What can I do with Flexbox Generator?

Configure flex layout and copy the CSS. Flexbox Generator is part of the Web & CSS shelf on utils.sbs and is designed for quick, one-off tasks.

Is Flexbox Generator free to use?

Yes. Flexbox Generator is free, requires no account, and has no per-file or per-use charge.

Are my files uploaded when I use Flexbox Generator?

No. Flexbox Generator is designed to process your input locally in the browser. Files are not uploaded to a server for processing.

What formats does Flexbox Generator support?

It works with plain text, code, markup and structured text, and returns a downloadable text file.

Can I use Flexbox Generator on my phone?

Yes. Flexbox Generator is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.

Web & CSS tool

Flexbox Generator

Configure flex layout and copy the CSS.

Runs on-deviceNo sign-upFree

All web & css tools

Workspace

Flexbox Generator

Runs locally

Direction

Justify content

Align items

Wrap

Gap

Result

The guide

By the utils.sbs team · Reviewed November 2026 · How we build and review tools

Quick answer

Flexbox Generator is a free browser-based web & css tool. Configure flex layout and copy the CSS. It runs with JavaScript locally, requires no account and does not upload your files. Open the page, add your input, adjust any options and download the result.

What is Flexbox Generator?

Flexbox Generator is a free browser-based web & css tool from utils.sbs. Configure flex layout and copy the CSS. It is built for quick, focused jobs: open the page, add your input, adjust the options and take the result with you. No account, install or server upload is required.

At a glance

Category	Web & CSS
Input	Plain text, code, markup or JSON
Output	A downloadable text or code file
Engine	JavaScript
Processing	In your browser
Price	Free
Account	Not required

How Flexbox Generator works

Text is processed in the browser with JavaScript and downloaded from a local blob. Nothing is uploaded.

How to use Flexbox Generator

1Open Flexbox Generator and add your input.
2Adjust the options: direction, justify content, align items, wrap and more.
3Run the tool, check the preview or result, and download the output.

When to use Flexbox Generator

Clean, transform or compare text before using it elsewhere.
Convert markup, JSON or structured text between formats.
Count, format or inspect content quickly in the browser.

Inputs and options

Direction: Choose one of 4 options.
Justify content: Choose one of 6 options.
Align items: Choose one of 5 options.
Wrap: Choose one of 3 options.
Gap: Set this value before running the tool.

Limitations

Very large inputs may be limited by the browser's available memory.

Privacy and accuracy

Flexbox Generator processes its input in the browser whenever the platform API allows it. Files and values are not uploaded to a server for processing, and the tool does not require an account. For calculations, use the result as a reference and verify important decisions against the source formula or a qualified professional. Read our methodology.

FAQ