The best free box-shadow generator builds the CSS for you in the browser and shows a live preview as you adjust the offset, blur, spread and color. It is free with no account and gives you copy ready box-shadow code you can paste straight into a stylesheet.
The box-shadow property has several values that interact in ways that are hard to picture from numbers alone. The best generator lets you drag the horizontal and vertical offset, blur radius, spread and color and updates a live preview, so you tune the look by eye instead of guessing and refreshing. When it looks right the tool hands you the exact CSS.
Because the generator runs in your browser there is no upload and no account, and the preview reacts the moment you change a value. You can build a soft card shadow, a hard drop, or a subtle inset and copy the code with one click. It keeps working offline once the page has loaded, so it fits neatly into your styling workflow.
Yes. The preview updates as you change the offset, blur, spread and color.
Yes. There is no account, no watermark and it runs entirely in your browser.
Yes. You can build outer drop shadows and inset shadows and copy the CSS for either.