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Box Shadow Generator

Visual CSS box-shadow generator with X/Y/blur/spread/color and live preview.

Best for: Cards, buttons, modals, and any element that should appear raised or recessed.

Complete guide

Input

box-shadow: 0px 8px 24px 0px rgba(0,0,0,0.25);
How it's calculated & sources
The Box Shadow Generator uses the standard method for this calculation. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

Continue your journey

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Box Shadow?
A box-shadow generator builds the CSS for a drop or inner shadow with a live preview and copyable code.
Why does Box Shadow matter?
A CSS value that lifts an element off the page. Soft, low-opacity shadows usually read as more premium than hard, dark ones.
How is Box Shadow calculated?
box-shadow takes a horizontal offset, a vertical offset, a blur radius, an optional spread, and a colour; adding inset turns it into an inner shadow. You can stack several shadows separated by commas for layered, realistic depth. Formula: box-shadow: offset-x offset-y blur spread color [inset].
What are common box shadow mistakes?
Very large blur or spread that looks heavy and dated.
When should you use the Box Shadow Generator?
Cards, buttons, modals, and any element that should appear raised or recessed.

What is the Box Shadow Generator?

A box-shadow generator builds the CSS for a drop or inner shadow with a live preview and copyable code.

How the Box Shadow Generator works

box-shadow takes a horizontal offset, a vertical offset, a blur radius, an optional spread, and a colour; adding inset turns it into an inner shadow. You can stack several shadows separated by commas for layered, realistic depth.

box-shadow: offset-x offset-y blur spread color [inset]

Common mistakes to avoid

  • Very large blur or spread that looks heavy and dated.
  • Stacking many shadows on many elements, which can hurt scroll performance.
  • Forgetting that inset makes the shadow appear inside the element.

Keywords: box, shadow, css.

Sources: MDN — box-shadow

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Box Shadow Generator free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Box Shadow Generator?+

Box Shadow Generator uses the standard box shadow formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Box Shadow Generator runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Box Shadow Generator on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Reddit post
Title: I built/used this free box shadow generator — instant, no signup

Body: Visual CSS box-shadow generator with X/Y/blur/spread/color and live preview. Try it: https://freetoolsgalaxy.com/tools/box-shadow-generator
LinkedIn post
Box Shadow Generator on Free Tools Galaxy — Visual CSS box-shadow generator with X/Y/blur/spread/color and live preview. https://freetoolsgalaxy.com/tools/box-shadow-generator
Medium intro
# Box Shadow Generator — the free tool I keep coming back to

Visual CSS box-shadow generator with X/Y/blur/spread/color and live preview.

Try it: https://freetoolsgalaxy.com/tools/box-shadow-generator
Quora answer
The fastest way is to use a free in-browser box shadow generator: https://freetoolsgalaxy.com/tools/box-shadow-generator. Visual CSS box-shadow generator with X/Y/blur/spread/color and live preview.

Embed this tool anywhere

Free embed code for blogs, docs and dashboards. Every embed sends a backlink home — helping you and the galaxy grow together.

HTML iframe
Drop into any site — auto-resizes to its content height, theme-aware.
<iframe src="https://freetoolsgalaxy.com/tools/box-shadow-generator?embed=1" title="Box Shadow Generator" loading="lazy"
  style="width:100%;height:600px;border:0;border-radius:16px;background:#0b1020"
  allow="clipboard-write"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="ftg-embed-height"){document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source){f.style.height=e.data.height+"px";}});}});</script>
<p><a href="https://freetoolsgalaxy.com/tools/box-shadow-generator" target="_blank" rel="noopener">Powered by Box Shadow Generator on Free Tools Galaxy</a></p>
Responsive wrapper
Aspect-locked container — good for blog post bodies.
<div style="position:relative;padding-bottom:75%;height:0;overflow:hidden;border-radius:16px">
  <iframe src="https://freetoolsgalaxy.com/tools/box-shadow-generator?embed=1" title="Box Shadow Generator" loading="lazy"
    style="position:absolute;inset:0;width:100%;height:100%;border:0" allow="clipboard-write"></iframe>
</div>
WordPress / Markdown
Paste in a custom-HTML block or markdown file.
[Box Shadow Generator — free online tool](https://freetoolsgalaxy.com/tools/box-shadow-generator)

<iframe src="https://freetoolsgalaxy.com/tools/box-shadow-generator?embed=1" width="100%" height="600" frameborder="0"></iframe>
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<a href="https://freetoolsgalaxy.com/tools/box-shadow-generator" target="_blank" rel="noopener">Try the free Box Shadow Generator</a>

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Title
I built a free mortgage calculator that works instantly in the browser — no signup, no ads in your face
Body
Hey r/[subreddit],

I kept needing a quick mortgage calculator and most options online were slow or behind paywalls, so I built one that:

• Runs 100% in your browser (your data never leaves your device)
• No signup, no email wall, no popups
• Loads in under a second on mobile

It covers the standard mortgage use cases (mortgage, home, loan, payment) and links out to the formula + worked examples if you want to learn the math.

Link: https://freetoolsgalaxy.com/tools/mortgage-calculator

Happy to take feedback — what's missing?
Post to a relevant subreddit (e.g. r/InternetIsBeautiful, r/webdev, r/productivity). Avoid spammy subs.
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