All tools › How a surface looks
Frosted panel
A panel that blurs what is behind it, with the fallback that keeps it readable where it cannot.
It runs entirely in this browser tab: the CSS you paste is never uploaded, and the preview is drawn from the same numbers the rule carries rather than rendered by the browser — which is why a tool whose effect only exists in a compositor says so instead of drawing one.
Settings
- Colour
- A hex code, an `rgb()` or a CSS colour name.
- Opacity
- A number from 0 to 100.
- Blur
- A number from 0 to 40.
- Corner radius
- A number from 0 to 64.
- Add a border
- A hairline of the same colour, which is what gives the panel an edge.
- Add a fallback
- What happens where the newer property is not understood.
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Is what I paste uploaded anywhere?
- No. The whole application is carried as WebAssembly and runs on your own device. There is no server to send a stylesheet to, and no tool here makes a network request while it works.
- Is the preview what my browser will actually draw?
- For a colour, a shape and a curve, yes — it is drawn from the same numbers the rule carries. For anything a browser's compositor does against the page behind it — a backdrop filter, a blend mode, a scrollbar — no, and that tool says so on its own result rather than showing you an approximation.
- Why does a size come out as 1.125rem and not 1.1250000000000002rem?
- Because none of the arithmetic is done in binary floating point. Every length here is an exact decimal, so a conversion ends where it should: 18px is 1.125rem and 24px is 18pt, with no run of nines and no stray four at the twelfth place.
- Can I use these rules without attribution?
- Yes. What comes out is CSS — a declaration is not a work with an owner, and nothing here writes a comment into your stylesheet about where it came from.
Other tools for how a surface looks
Soft shadows
A raised or pressed surface, with the two shadows taken from the background rather than from black and white.
Text shadow
One shadow or five, including the four-corner trick that draws an outline everywhere.
Filters
Brightness, contrast and the rest, with only the ones that do something written down.
Blend modes
What each mode does to two colours, worked out exactly for the twelve that can be.
Background pattern
A repeating pattern made of gradients, so that there is no file to load and nothing to go missing.
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