Box Shadow is a free color & design tool that runs entirely in your browser — cSS box-shadow with live preview. No upload, no account, no limits.
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How to use Box Shadow
Open the Box Shadow tool.
Paste or type your color value into the input field.
The output updates as you type — adjust the options if you need a different format.
Copy the result, or share the URL to hand the exact input to someone else.
About Box Shadow
Design a CSS box-shadow visually. Drag sliders for offset X/Y, blur and spread, set the color and opacity, toggle inset, and watch a live preview update. Copy the ready-to-paste box-shadow value.
What people use it for
Dial in an elevation shadow for a card or button.
Create an inset shadow for an input or well.
Copy a precise box-shadow value into your CSS.
Frequently asked questions
Can it do inset shadows?
Yes — toggle inset, and adjust offset, blur, spread, color and opacity with a live preview.
Is it private?
Every calculation happens on this page, in your own browser. Your input is never sent to a server, never logged and never used for training — which also means the tool keeps working when you are offline.