Placeholder Image Generator
Generate placeholder images with exact dimensions, colors, and text — download as PNG or copy the URL for development.
Last updated: March 25, 2026
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Buy me a coffeeWhat is Placeholder Image Generator?
Placeholder images are temporary stand-in images used during web development and UI design when final images are not yet available. Rather than leaving empty spaces in a layout — which distorts dimensions and obscures how the final design will look — placeholder images fill those spaces with exact dimensions, making layouts immediately reviewable. They are labeled with their resolution (e.g., "800×600") so developers and reviewers can verify correct sizing at a glance.
Services like Placeholder.com (via URL parameters: https://via.placeholder.com/800x600/FF5733/FFFFFF?text=My+Image) generate placeholders on-demand from a CDN. This local tool generates placeholders using the browser's Canvas API — no network request required, instant generation, and fully private. The Canvas renders a colored rectangle with centered text showing the dimensions, and the result is exported as a downloadable PNG.
How to Use Placeholder Image Generator
Set the Width and Height in pixels — common presets: 1920×1080 (HD), 800×600 (web card), 400×400 (avatar square)
Choose a Background Color for the placeholder body and a Text Color for the dimension label
Type optional custom Text to display on the image (defaults to "WxH" dimensions, e.g., "800×600")
Choose the Output Format: PNG (lossless, ideal) or JPEG (compressed, smaller)
Click "Download" to save the image file, or "Copy URL" to get a base64 data URL for use in HTML src attributes
Common Use Cases
- Filling card image slots in a wireframe or HTML prototype before the design team delivers final photos
- Creating grid layout placeholders with exact aspect ratios for testing a photo gallery layout
- Generating avatar and profile icon placeholders of specific sizes for a user list mockup
- Creating placeholder hero images (1920×400) for testing a landing page header layout
- Generating placeholder thumbnails for a video list UI to verify grid column alignment
- Producing placeholder images for a blog post card grid template with consistent 16:9 aspect ratio
- Testing responsive image <picture> srcset breakpoints with dimension-labeled placeholder images
- Creating product image spots in an e-commerce mockup before photography is completed
Example Input and Output
Multiple common placeholder sizes and how to use them in HTML:
1. Blog post thumbnail: 800 × 450 (16:9)
2. User avatar: 64 × 64 (square)
3. Hero banner: 1440 × 500 (wide)<!-- Blog post thumbnail placeholder -->
<img
src="https://via.placeholder.com/800x450/E2E8F0/64748B?text=Blog+Image"
width="800" height="450" alt="Blog post thumbnail placeholder"
/>
<!-- User avatar placeholder (64px circle) -->
<img
src="data:image/png;base64,..." <!-- downloaded from this tool -->
style="border-radius: 50%;"
width="64" height="64" alt="User avatar"
/>
<!-- Hero banner inline data URL -->
<img
src="data:image/png;base64,iVBOR..."
style="width: 100%; height: auto;"
alt="Hero banner placeholder"
/>Client-Side Processing
Placeholder images are generated using the browser's HTML5 Canvas API. No data is sent to any server. The tool works fully offline once the page is loaded.
Using placeholders in Figma
You can drag a downloaded PNG placeholder directly into Figma frames, or use the Figma plugin "Content Reel" which auto-fills image frames with dimension-appropriate placeholder images. For Figma, download PNGs at the exact pixel size you need (Figma places images at 100% of their pixel dimensions by default).
SVG Placeholder Alternative
SVG-based placeholders are infinitely scalable and have tiny file sizes: <svg xmlns="http://www.w3.org/2000/svg" width="800" height="450"><rect fill="#eee" width="100%" height="100%"/><text x="50%" y="50%" text-anchor="middle" fill="#999">800×450</text></svg>. Encode this in a URI with encodeURIComponent() and use as a data:image/svg+xml,%3Csvg... src attribute for CSS-styled placeholders without any generation tools.
Frequently Asked Questions
Can I use placeholder image URLs in my code instead of downloading files?
What is the difference between placeholder.com and this tool?
What aspect ratios should I use for standard placeholders?
Can I add my own text to the placeholder?
What is the maximum size I can generate?
Are there privacy concerns with online placeholder services?
How This Tool Works
An HTML5 Canvas element is created at the specified width and height. ctx.fillRect fills the entire canvas with the chosen background color. ctx.fillText renders the dimension label and custom text (if provided) at the canvas center, with a dynamically calculated font size based on image dimensions. ctx.canvas.toBlob() or toDataURL() exports the rendered canvas as a PNG binary or base64 string, respectively. The download uses a programmatic <a download> click.
Technical Stack