Why use placeholder images?
Building a layout before real content is ready is a routine part of web and app design. A placeholder image reserves the exact space a final photo or graphic will occupy, so you can test spacing, alignment, and responsiveness without waiting on final assets.
Developers use sized placeholders to catch layout bugs early - an image that is too small or the wrong aspect ratio can break a grid or overflow a container in ways that only show up once real content is dropped in. Testing with correctly sized placeholders first avoids that surprise later.
Designers use labeled placeholders in wireframes and presentations to communicate exactly what size and shape of image a layout expects, without needing to source or license a real photo just for a mockup.
Use the preset buttons for common sizes like social media banners or square thumbnails, or enter exact custom dimensions up to 4000 by 4000 pixels.
Generate a placeholder image in three steps
The image is drawn directly on an HTML canvas in your browser - no server round trip needed.
Set your dimensions
Enter an exact width and height, or click one of the common size presets to fill them in automatically.
Customize the appearance
Choose a background color and text color. Optionally set custom label text - it defaults to showing the image dimensions.
Download the image
Pick PNG or JPEG and click Download image. The file is generated instantly and saved to your device.
Tips for using placeholder images well
Match the final aspect ratio
Set width and height to match the exact aspect ratio your final image will use, so the layout test is accurate.
Use custom text for context
Label a placeholder with something like "Hero Banner" or "Product Photo" so it is clear what content the space is reserved for.
Use PNG for transparency-adjacent workflows
Even though this generator does not produce transparent output, PNG is a safer default when the placeholder will later be swapped in a system that expects PNG assets.
Generate a full set for a design system
Create placeholders at every common breakpoint size you use, so your whole team tests layouts consistently.
Keep contrast readable
Choose a text color with strong contrast against your background so the dimension label stays legible at a glance.
Frequently asked questions
What is the maximum size I can generate?
Width and height can each go up to 4000 pixels.
Can I customize the text on the image?
Yes. Enter any custom text, or leave it blank to automatically show the image dimensions.
What formats are available?
PNG and JPEG are both supported. PNG is recommended for most use cases.
Does this store or track the images I generate?
No. Every image is generated and downloaded directly in your browser with nothing sent to a server.
Is this tool free to use?
Yes, completely free with no account, watermark, or usage limit.