The blur picks up whatever sits behind it. Move the sliders and watch the edge quality change.
backdrop-filter needs a translucent surface to show anything — drop the alpha to 0 and the card disappears, which is exactly what happens in a real browser.

Paste a data URI and preview or download the image.

Read camera EXIF metadata from a JPEG and strip it.

Add a text watermark with position, opacity, colour and rotation.

Rotate 90/180/270 and flip horizontally or vertically, download.

What a sum is worth in today's money over time, and how much of a nominal return inflation quietly takes back.

List every balance, minimum and APR, add an extra monthly payment, and see the avalanche and snowball plans run side by side with the interest each one costs.

Split take-home pay into needs, wants and savings with editable line items that rebalance live against the rule and name the bucket that is over.

Compare two texts line by line and word by word, with a unified diff and add/remove counts.