CSS Background Generator

1. Image & options

Local

Drop an image here

or click to browse · or paste with Ctrl/Cmd + V

PNG · JPG · WEBP · GIF · SVG · BMP

…or paste a data URI / Base64 string

2. Generated CSS

—

Background preview appears here.

About this tool

About CSS Background Generator

The CSS Background Generator turns a dropped image into a complete background rule, with control over size, repeat, position, attachment, origin, and clip, previewed live. It is for developers composing precise CSS backgrounds.

Background shorthand has many properties that are easy to misremember. Building the rule visually with a live preview gets it right, and the image is encoded locally.

How to use

Step by step

Drop an image to use as the background.
Set size, repeat, position, attachment, origin, and clip.
Watch the live preview reflect each change.
Review the generated CSS.
Copy it into your stylesheet.

Key features

What it offers

Full background property control
Live preview — CSS Background
Inlined data URI background
Generated locally — CSS Background

Common use cases

Where it helps

Setting a precise background image on a section
Experimenting with repeat and position visually
Producing a self-contained background with an inlined image
Learning how background properties interact

Best practices

Tips for best results

Set a background colour as a fallback behind the image.
Link large background images rather than inlining them to keep CSS light.
Test fixed attachment and positioning across screen sizes.

Common mistakes to avoid

Pitfalls to watch for

Inlining a large background image, which inflates the CSS file.
Forgetting a fallback background colour behind a transparent or slow image.
Using fixed attachment without testing it on mobile, where support varies.

Benefits

Why people use it

Complete rule

Every background property in one place.

Visual feedback

See the effect before copying.

Self-contained

Optionally inline the image as a data URI.

Private

Encoding happens in the browser.

FAQ

Common questions

A CSS rule using background-image: url(data:…) plus the background properties you choose, ready to paste into a stylesheet.

Inlining suits small textures and icons to avoid extra requests. For large images, a hosted URL is usually better for caching and page weight.

It controls how far the background extends — to the border, padding, or content box — and enables effects like text-clipped backgrounds.

No. The rule is generated entirely in your browser.

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Private by design

This runs entirely in your browser

No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.

How privacy works