What is the CSS box-shadow property?

The box-shadow CSS property attaches one or more drop shadows to an HTML element. It is heavily used in web design to add depth, elevation, and 3D effects to flat UI components like cards, buttons, and modals.

Is this Box Shadow Generator free to use?

Yes, our CSS Box Shadow Generator is 100% free. There are no usage limits, no premium features, and no ads. You can generate as many shadow styles as you need.

What does the 'Blur Radius' do?

The blur radius determines how sharp or soft the shadow is. A value of 0px makes the shadow completely solid and sharp, while a higher value (e.g., 20px) makes the shadow blurry, faded, and more natural looking.

What does the 'Spread Radius' do?

The spread radius expands or shrinks the shadow before it begins to blur. A positive value makes the shadow larger than the element itself, while a negative value shrinks it (often used to make shadows look like they are directly under an element).

What is an Inset shadow?

By default, box shadows appear on the outside of an element (drop shadow). Toggling the 'Inset' option forces the shadow to appear inside the element, creating a pressed, sunken, or hollow visual effect.

Why does the generated code use RGBA format?

We convert your hex color into RGBA (Red, Green, Blue, Alpha) format so that you can control the opacity (transparency) of the shadow independently of the element's actual color. This results in far more realistic shadows.

Is the generated CSS cross-browser compatible?

Yes! Our tool automatically generates the standard `box-shadow` property, along with the `-webkit-` and `-moz-` vendor prefixes to ensure maximum compatibility across older versions of Safari, Chrome, and Firefox.

Can I test the shadow on different background colors?

Absolutely. You can use the 'Background Color' and 'Box Color' pickers to simulate exactly how your shadow will look against your specific website's color theme.

Does this tool work offline?

Yes! Because the generator is built entirely with client-side JavaScript, once the page loads, you can continue to generate and copy CSS shadows even if you lose your internet connection.

Why should I use a visual generator instead of writing CSS manually?

Writing box-shadow CSS manually involves guessing pixel values and refreshing your browser constantly. A visual generator gives you 60fps real-time feedback, allowing you to design beautiful shadows in seconds rather than minutes.

Free CSS Box Shadow Generator

Design beautiful, modern CSS drop shadows visually. Adjust blur, spread, and opacity to instantly generate cross-browser compatible CSS code.

Shadow Controls

Horizontal Offset (px)10

Vertical Offset (px)10

Blur Radius (px)20

Spread Radius (px)0

Shadow Opacity (%)25

Shadow Type

Shadow Color

#000000

Box Color

#a855f7

Background Color

#ffffff

CSS Code

box-shadow: 10px 10px 20px 0px rgba(0, 0, 0, 0.25);
-webkit-box-shadow: 10px 10px 20px 0px rgba(0, 0, 0, 0.25);
-moz-box-shadow: 10px 10px 20px 0px rgba(0, 0, 0, 0.25);

How It Works

Design the perfect shadow in four simple steps.

Tweak the Sliders

Use the interactive sliders to adjust the Horizontal/Vertical offsets, Blur radius, Spread radius, and Shadow opacity to your exact liking.

Live Visual Preview

As you move the sliders, watch the 3D box in the preview panel update instantly. You can even change the box and background colors.

Choose Shadow Type

Toggle between a standard Drop Shadow (Outline) or an Inner Shadow (Inset) to create indented or pressed UI elements.

Copy the CSS Code

Once you are happy with the visual design, click 'Copy CSS' to instantly copy the cross-browser compatible CSS code to your clipboard.

The Best Free CSS Box Shadow Generator Online

In modern web design, creating depth and hierarchy is crucial for building intuitive user interfaces. The CSS box-shadow property is the most powerful tool developers have to create 3D elevation effects, floating cards, and clickable buttons. However, manually typing out pixel values and guessing RGBA opacity levels is a tedious, time-consuming process. Our free CSS box shadow generator solves this by providing a highly visual, interactive playground.

By using our online shadow generator, you can instantly see how your CSS properties affect an HTML element in real-time. Whether you are aiming for a harsh, brutalist solid shadow or a soft, modern neumorphism shadow generator effect, our interactive sliders give you pixel-perfect control over every variable.

Mastering the Box-Shadow Property

To build a beautiful CSS shadow, you need to understand the four main numerical values that make up the CSS syntax. Our box shadow visualizer breaks these down into easy-to-use sliders:

Horizontal & Vertical Offset: These two values control the X and Y axis of the shadow. Positive values push the shadow to the right and down, while negative values push it to the left and up. This simulates where the "light source" is coming from.
Blur Radius: A critical metric for modern UI design. A low blur radius creates a sharp, retro drop shadow, while a high blur radius creates a soft, diffused css glow effect generator vibe that looks highly premium.
Spread Radius: This value allows you to expand or contract the physical size of the shadow before the blur is applied. Negative spread is a secret weapon used by expert designers to make shadows look like they are directly under an elevated card.

Design Inner Shadows (Inset CSS)

While drop shadows make elements look like they are floating above the page, an inset shadow generator effect does the exact opposite. By toggling the "Inner Shadow (Inset)" mode on our tool, the shadow is rendered on the inside of the HTML element. This creates a stunning "pressed", stamped, or sunken appearance. Inner shadows are highly popular for search bar inputs, toggle switches, and deep UI wells.

Cross-Browser Compatible CSS Code

Once you have visually tweaked your css drop shadow maker to perfection, you need reliable code that works on every device. Our tool acts as a robust box shadow code generator. The output box automatically compiles the exact CSS string utilizing RGBA formatting (to handle box shadow opacity correctly).

Furthermore, to ensure older browsers don't break your design, we automatically append the necessary `-webkit-box-shadow` and `-moz-box-shadow` vendor prefixes. With a single click of the "Copy CSS" button, you can paste the production-ready code directly into your stylesheet or Tailwind configuration.

A 100% Client-Side Developer Tool

Like all utilities in the Gigglade suite, this CSS tool for developers is built entirely on client-side JavaScript. This means it requires zero server communication. You will never experience network lag while dragging sliders, resulting in a buttery-smooth 60fps live preview. Furthermore, because no data is sent to a server, this is a fully private no upload css tool that works entirely offline once loaded in your browser.

More Tools for Web Designers

Building a beautiful website requires an arsenal of solid tools. If you've just finished designing your shadows and need to pick the perfect brand colors, check out our Image Color Extractor & Palette Generator. Working with large APIs to populate your newly designed cards? Use our JSON Formatter & Validator to debug your payloads instantly.

Frequently Asked Questions

Common questions about CSS shadows and UI design.