Box Shadow Generator
The Box Shadow Generator is a free online tool designed to create custom CSS box-shadow properties with real time visual feedback. It is perfect for web developers and UI designers who want to add depth and dimension to their web elements. You can use it directly in your browser to style cards, buttons, and containers without writing complex CSS manually.
How the Box Shadow Generator works
- 1
Add Your Content
Start by adjusting the sliders for horizontal offset, vertical offset, blur radius, and spread radius. You can also pick your desired shadow color and choose between inset or outset shadows.
- 2
Format Your Data
As you tweak the settings, the tool instantly calculates the exact CSS syntax required for your design. It updates the live preview panel so you can see how the shadow interacts with your element in real time.
- 3
Get Your Results
Once you are happy with the visual result, grab the generated CSS code from the output box. Simply copy and paste the box-shadow property directly into your stylesheet.
Real-world examples
E-commerce Product Card
Input: Horizontal 0, Vertical 10, Blur 20, Spread -5, Color black at 10% opacity.
Results: A soft, elevated shadow that makes the product card pop off the white background.
Use case: Storefront designers use this to create modern, clickable-looking product cards.
SaaS Dashboard Widget
Input: Horizontal 0, Vertical 4, Blur 6, Spread -1, Color black at 5% opacity.
Results: A subtle, tight shadow that provides gentle separation without looking heavy.
Use case: UI developers use this to maintain a clean, minimalist aesthetic in data-heavy dashboards.
Blog Featured Image
Input: Horizontal 0, Vertical 15, Blur 30, Spread 0, Color black at 20% opacity.
Results: A dramatic, deep shadow that gives the featured image a floating, 3D effect.
Use case: Bloggers use this to draw immediate visual attention to their main article header images.
Landing Page Hero Section
Input: Horizontal 0, Vertical 20, Blur 40, Spread 0, Color rgb(50, 50, 93) at 25% opacity.
Results: A large, diffused shadow that adds a premium, modern feel to the main call-to-action box.
Use case: Marketers use this to make landing page conversion boxes stand out prominently.
Mobile App UI Card
Input: Horizontal 0, Vertical 8, Blur 16, Spread -4, Color black at 15% opacity.
Results: A balanced shadow that mimics natural lighting on a mobile screen.
Use case: Mobile web developers use this to create touch-friendly, tactile card interfaces.
Box Shadow Generator FAQ
Is an account required to use this tool?
No, you can use this tool instantly without registering or logging in.
Is my data secure and private?
Yes, all processing happens directly in your browser, meaning your design data is never sent to our servers.
Does the tool work offline?
Once the page is loaded, the core generation engine works entirely offline in your browser.
When should I use the Inset option?
Inset draws the shadow inside the element instead of outside, which is ideal for pressed button states, input wells, and recessed panels.
How is shadow opacity handled?
A dedicated Opacity slider converts your chosen color into an rgba() value, separating color from transparency so shadows blend naturally.
How is this different from similar text editors?
Unlike code editors, this tool provides a visual canvas to see the shadow effects before you even write the code.
What is the technical working principle?
The tool maps your slider inputs to the CSS box-shadow syntax and applies them to a DOM element via JavaScript.
What is the most common use case?
Developers most commonly use it to quickly design and copy polished single-layer shadows for cards, buttons, and widgets.
Why use the Box Shadow Generator?
- Visual Preview: See exactly how your shadow looks before applying it to your code.
- Time Saving: Eliminates the need to constantly switch between code and browser to test values.
- Single Shadow Focus: One carefully tuned shadow per element keeps interfaces clean and fast.
- Cross Browser Compatible: Generates standard CSS that works perfectly across all modern browsers.
- Browser based Privacy: Keeps your design concepts secure by processing everything locally.
- Zero Setup Required: Works immediately in any modern web browser without installations.
- Completely Free: Offers full functionality without hidden paywalls or premium tiers.
- Clean Code Output: Generates properly formatted CSS ready to be pasted into your project.
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