Image and design tool
Placeholder Image Generator
Create custom placeholder images for mockups, Open Graph previews, thumbnails, cards, and design fixtures. Set dimensions, colors, text, format, then download or copy the result.
Images are generated in your browser. No uploads, no account, and no remote image service dependency.
Image settings
Generate local placeholder images for mockups, wireframes, cards, and Open Graph previews.
Examples / presets
Format
Rendering happens in your browser with Canvas. No image data is uploaded.
Preview
1200x630px, PNG, -
File name
placeholder-1200x630.png
Canvas size
1200 x 630
Data URI size
-
Fast layout fixtures
Generate exact-size assets for cards, banners, avatar slots, and hero sections.
Copy-ready output
Download PNG, JPEG, or WebP, or copy a data URI / img tag for prototypes.
Private by default
The tool uses Canvas locally, so placeholder text and settings stay on your device.
How to use placeholder images well
Match the final aspect ratio
Use the final slot dimensions whenever possible. This prevents layout shifts when real images replace placeholders.
Use meaningful labels
Labels such as “Hero image” or “Product card” make prototypes easier to review than generic gray boxes.
Choose format intentionally
PNG keeps text sharp, JPEG is useful for photo-like placeholders, and WebP is good for browser performance testing.
Avoid huge inline data URIs
Data URIs are convenient for small prototypes, but large images should usually be downloaded and served as files.
Common placeholder sizes
FAQ
What is a placeholder image?
A placeholder image is a temporary graphic used while designing layouts, prototypes, and content slots before the final image is ready.
Does this upload my image settings anywhere?
No. The image is rendered locally in your browser with the Canvas API. The generated image, colors, and text are not uploaded.
Which format should I use?
Use PNG for crisp UI placeholders, JPEG for simple photographic mocks, and WebP when you want a modern compressed asset for browser testing.
Can I use the data URI in HTML or CSS?
Yes. You can copy the generated data URI or an img tag and paste it into prototypes, docs, fixtures, or visual regression tests.