How to Generate Placeholder Images for Web Development

What Are Placeholder Images?

Placeholder images are temporary images used during web development before real content is available. They show the intended dimensions and help visualize layouts.

When You Need Placeholders

• Building a new website or app
• Creating wireframes or mockups
• Testing responsive layouts
• Demonstrating image slots to clients
• Writing documentation with example images

Creating Custom Placeholders

1. Set the exact dimensions you need
2. Choose a background color
3. Add dimension text overlay (e.g., "800 x 600")
4. Download the image

Common Placeholder Sizes

Use Case	Size
Blog thumbnail	300 x 200
Hero image	1920 x 1080
Avatar	150 x 150
Product photo	600 x 600
Banner ad	728 x 90
Social card	1200 x 630

Tips

• Use different colors for different placeholder types to visually distinguish them
• Include dimension text so developers know what size to use for real images
• Generate all needed sizes at once to save time
• Replace placeholders with real images before launching