Placeholder Image Generator — Free Online Image Creator
Generate custom placeholder images with text, colors, gradients, and shapes. Download as PNG, JPG, or SVG. Runs entirely in your browser.
How to Use the Placeholder Image Generator
- Set dimensions — enter the width and height in pixels.
- Choose shape — select rectangle, square, or circle.
- Pick background — use a solid color or enable gradient with two colors and angle.
- Add text — type a label (commonly "WIDTH × HEIGHT") and customize color, size, and font.
- Add border — optionally add a colored border with custom width.
- Add emoji — include an emoji for visual interest.
- Download — save as PNG, JPG, or SVG file.
- Copy code — grab the HTML img tag or data URI for embedding.
Why Use This Placeholder Image Generator
Placeholder images are essential during web development before final assets are ready. Instead of leaving blank spaces or using generic gray boxes, this tool creates branded placeholders that match your design system. The text labels show dimensions so designers know what size images to provide.
The gradient background option creates modern, visually appealing placeholders. The SVG format option produces crisp, resolution-independent images. All generation happens in your browser with no server uploads.
How It Works
The generator uses the HTML Canvas API to draw your specified dimensions, colors, gradients, text, and shapes onto an off-screen canvas. The result is then exported as a PNG, JPG, or SVG file. All processing happens entirely in your browser — no images are uploaded or stored on any server.
Common Sizes
| Use Case | Dimensions | Aspect Ratio |
|---|---|---|
| Blog featured image | 1200 × 630 | 1.91:1 |
| Social media post | 1080 × 1080 | 1:1 |
| Twitter/X header | 1500 × 500 | 3:1 |
| Thumbnail | 300 × 200 | 3:2 |
| Hero banner | 1920 × 1080 | 16:9 |
| Avatar | 256 × 256 | 1:1 |
Use Cases for Web Development
- Layout prototyping — Fill image slots during wireframing before final assets are ready.
- Responsive testing — Generate different sizes to verify image scaling at various breakpoints.
- Content management — Use as temporary images in CMS environments where uploads are pending.
- Design systems — Create branded placeholders that match your color scheme and typography.
- Performance testing — Test lazy loading and image optimization with consistent placeholder sizes.
Frequently Asked Questions
PNG supports transparency and is lossless — best for placeholders with alpha channels. JPG produces smaller files but doesn't support transparency. SVG is vector-based and scales infinitely — perfect for responsive designs.
Yes! While designed for development, these placeholders work in production too. Many websites use styled placeholder images as loading states or as actual content blocks. The generated images have no watermarks or restrictions.
Click "Copy HTML" to get a ready-to-use img tag with a data URI. Paste it into your HTML. Alternatively, download the image file and reference it with a standard img src attribute.
No! All image generation happens locally in your browser using the Canvas API. No data is sent to any server. The images exist only in your browser's memory until you download them.
Use Cases
Web Design Prototyping
Generate placeholder images for web design mockups before final assets are ready.
Wireframe Layouts
Create colored rectangles for wireframes and layout planning in design projects.
Responsive Testing
Test responsive image layouts by generating sized placeholders for different breakpoints.
Custom Dimensions
Create custom dimension placeholders with text labels showing exact image sizes.
Prototype Generation
Produce sized images for prototypes and downloadable placeholders for development.