Placeholder Image Generator for Mockups and Web Layouts
This placeholder image generator creates dummy images at any size you set, with your own background color, text, and font. It is built for developers, designers, and content creators who need a quick stand-in image for mockups, wireframes, prototypes, and layout testing.
Instead of relying on a generic placeholder service, you build exactly what you need right here. Start from a preset for social media, web banners, or device screens, or enter custom dimensions up to 4096 × 4096 pixels, then export as PNG, JPG, WebP, or SVG.
How to Create a Placeholder Image
Choose a size
Pick a preset from the Common, Social, Web, or Device tabs, or type your own Width and Height. Turn on Lock Aspect Ratio to keep proportions while you resize.
Customize the appearance
Set the Background color with the picker or a hex code, and add your own Text. Leave the text blank to show the dimensions (for example, 800 × 600). With Auto contrast on, the text color is picked automatically to stay readable.
Adjust the font
Auto-fit sizes the text to the canvas by default. Switch it off to set an exact Font Size, and choose a Font Weight of Normal, Semi Bold, or Bold.
Export the image
Choose a Format — PNG for lossless quality, JPG or WebP for smaller files (with a Quality slider), or SVG for scalable vector output — then click Download. To produce many sizes, click Add to build a batch and Download ZIP when you are done.
Features
Preset Size Library
Four tabs of ready sizes — Common (1080p, 720p, VGA, thumbnails), Social (Facebook, Instagram, Twitter), Web (leaderboard, hero, blog header), and Device (iPhone, iPad, Desktop FHD/QHD/4K).
Custom Dimensions
Enter any width and height up to 4096 × 4096 pixels, with an optional lock to keep the aspect ratio as you resize.
Color Customization
Set the background and text colors with a visual picker or a hex code for precise control over the look.
Auto Contrast
Auto contrast reads the background brightness and picks a readable text color, so labels stay visible on light or dark fills.
Flexible Text and Fonts
Show custom text or the default dimension label, auto-fit the font to the canvas or set it manually, and pick Normal, Semi Bold, or Bold weight.
Multiple Export Formats
Download as PNG, JPG, WebP, or SVG, with an adjustable quality slider for the JPG and WebP formats.
Batch Generation
Add several placeholders with their own sizes, colors, and text, then download them all at once as a single ZIP archive.
Live Canvas Preview
The canvas updates instantly as you change the size, colors, text, and font, so you see the final image before you download.
Frequently Asked Questions
What is a placeholder image?
A placeholder image is a temporary stand-in that fills an image slot before the real artwork exists. It usually shows its dimensions or a short label, so designers and developers can lay out mockups, wireframes, and templates while the final images are still being prepared.
How do I create a placeholder image with a custom size?
Type the width and height you want, or pick a preset and adjust from there. You can create images up to 4096 × 4096 pixels, which covers everything from small thumbnails to 4K displays and large print layouts.
How do I add text to a placeholder image?
Type anything in the Text field and it appears centered on the image. If you leave the field empty, the dimensions are shown by default (for example, 800 × 600). You control the font size, weight, and color, or let auto-fit and auto contrast handle them for you.
What does Auto contrast do?
Auto contrast looks at the brightness of your background color and picks a text color that reads clearly against it — darker text on light backgrounds and lighter text on dark ones. Turn it off to choose the text color yourself.
What formats can I download, including PNG and SVG?
You can export as PNG, JPG, WebP, or SVG. Use PNG for sharp, lossless images, JPG or WebP for smaller files with an adjustable quality slider, and SVG when you need a scalable vector that stays crisp at any size.
How does batch generation work?
Set up a placeholder, click Add to drop it into the batch list, then repeat for each size you need — every item keeps its own colors and text. When you are ready, click Download ZIP to get them all in a single archive.
Are my images uploaded to a server?
No. Every image is generated entirely in your browser using the HTML Canvas API. Nothing is uploaded or stored on any server, and no usage data is collected.
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