Placeholder Image Generator
Generate sized placeholder images with a label.
How to use
- 1 Enter the width and height in pixels.
- 2 Choose a background colour, and a text colour or leave auto-contrast on.
- 3 Keep the size as the label or switch to a custom caption.
- 4 Pick PNG, JPEG or WebP and download the placeholder.
About Placeholder Image Generator
The Placeholder Image Generator builds dummy images on demand for mockups, wireframes, layout tests and lorem-ipsum-style content, without pulling in a third-party placeholder service or making a single network request.
Pick the exact pixel dimensions you need and the tool paints a solid rectangle, prints the size on top, and hands you a downloadable image — perfect for filling an empty card, sizing a hero banner, or checking that a responsive grid behaves before the real artwork arrives.
Every part of the placeholder is yours to set.
Width and height define the canvas; the background colour and text colour are full colour pickers.
Leave auto mode on and the tool stamps the dimensions as the label and automatically chooses black or white text for the best contrast against your background — so it stays readable whatever colour you pick.
Switch auto off to type your own caption, like a section name or an asset id, or to leave it blank for a clean colour swatch.
The label font scales to fit the box, so it looks right at thumbnail sizes and at full-page banners alike.
Export as a crisp lossless PNG, or as a compressed JPEG or WebP when file size matters.
The whole thing is drawn with the Canvas API on your own device, so there is nothing to sign up for, nothing is uploaded, and it keeps generating images even when you are offline.
FAQ
Does this call an external placeholder service?
No. The image is drawn entirely with the Canvas API in your browser, so it works offline and makes no network requests.
How is the text colour chosen automatically?
In auto mode the tool measures the background brightness and picks black or white text for the clearest contrast, so the label is always readable.
Which format should I download?
PNG is lossless and supports sharp edges; choose JPEG or WebP when you want a smaller file and do not need transparency.