Placeholder Image Generator
Create custom placeholder images with adjustable size, colors, text, and format. Download or copy as Data URL instantly.
What Is a Placeholder Image Generator?
A placeholder image generator creates simple images of a specified size with optional text overlays. These images are commonly used during web development, UI prototyping, and wireframing to represent where real images will eventually appear. Instead of relying on external placeholder services that may go offline, this tool generates images entirely in your browser using the Canvas API.
How to Generate Placeholder Images
- Set Size — Enter width and height manually, or click a preset (150x150, 300x200, 640x480, 1280x720, 1920x1080)
- Customize Colors — Pick a background color and text color using the color pickers
- Add Text — Enter custom text or leave blank to show "WxH" by default
- Choose Format — Select PNG (lossless), JPG (compressed), or WebP (modern)
- Generate & Export — Click "Generate Image" to preview, then download the file or copy its Data URL for inline use
Why Use This Placeholder Image Generator?
- No External Dependencies — Unlike placeholder.com or via.placeholder.com, this runs entirely in your browser with zero API calls
- Always Available — Works offline and never goes down since there's no server involved
- Customizable — Full control over size, colors, text, and output format
- Data URL Support — Copy the image as a Data URL to embed directly in HTML or CSS without hosting a file
- Multiple Formats — Export as PNG for crisp graphics, JPG for smaller photos, or WebP for modern browsers
- Privacy — No images are uploaded or stored anywhere. Everything stays in your browser
FreeToolbox vs Other Placeholder Services
| Feature | FreeToolbox | placeholder.com | placehold.co |
|---|---|---|---|
| Runs Offline | Yes | No (API) | No (API) |
| Custom Colors | Full color picker | Hex only | Hex only |
| Custom Text | Yes | Yes | Yes |
| Format Options | PNG / JPG / WebP | PNG / JPG / GIF | PNG / JPG / SVG |
| Data URL Copy | One click | No | No |
| Max Size | 4096x4096 | 4000x4000 | 5000x5000 |
| Ads | Minimal | None | Moderate |
FAQ
What is a placeholder image used for?
Placeholder images are used in web development and design to temporarily fill image slots during prototyping, wireframing, or testing layouts. They show the intended dimensions so designers and developers can plan spacing and alignment before real content is available.
Can I use the generated images commercially?
Yes. The images are generated by your browser and contain no copyrighted content. You can use them freely in any project, commercial or personal.
What is a Data URL and why would I use it?
A Data URL embeds the image data directly in a string (e.g., data:image/png;base64,...). You can paste it into an HTML img src or CSS background-image property to display the image without needing a separate file. This is useful for prototyping, emails, or reducing HTTP requests.
Which format should I choose?
PNG is best for crisp text and solid colors (lossless). JPG produces smaller files but with slight quality loss — good for photo-like placeholders. WebP offers the best compression for modern browsers but may not work in older ones.
Is there a size limit?
The maximum supported size is 4096x4096 pixels. Very large images may take a moment to generate and produce large Data URLs. For most placeholder needs, sizes under 1920x1080 work perfectly.