Generating placeholder images for mockups
Set a width, height, background color, text color, and an optional label, and this tool draws a placeholder image right there in your browser - instantly, with no upload or server round-trip. It's the modern equivalent of the classic gray placeholder boxes with dimensions stamped on them that designers and developers have used for decades to fill layout gaps before real images are ready.
Why this runs entirely client-side
The image is drawn using the HTML5 canvas API directly in your browser, then converted to a downloadable PNG - nothing is uploaded or generated on a server. That means it works instantly with no wait, and no placeholder image or dimension you enter is ever logged or stored anywhere.
Choosing dimensions that match your real use case
For the most useful mockup, match the placeholder's width and height to the actual image slot in your design - a hero banner placeholder and a thumbnail placeholder should use genuinely different dimensions so the layout you're testing behaves the way it will with real images dropped in later.
Common uses
Filling image slots in a wireframe or prototype before final assets are ready, testing how a responsive layout handles images of specific aspect ratios, or quickly generating a labeled placeholder to hand off to a designer showing exactly what size image is needed where.