Generate placeholder images with exact dimensions, custom colors, text, and fonts. Download PNG, JPEG, or WebP with 16 presets for social and web.
Placeholder Image Generator edits your images entirely on your device, so the originals never leave it.
It's one of the free
Image Tools
on UseToolSuite.
Use it below, then scroll down for a step-by-step guide, answers to common questions, and related tools.
About Placeholder Image Generator
Placeholder Image Generator creates customizable dummy images for use in web development, design mockups, wireframes, and prototypes. Instead of searching for stock photos or waiting for final assets, developers and designers can instantly generate images with exact dimensions, custom colors, and text labels. Unlike external services like placeholder.com that require network requests and track usage, this tool runs entirely in your browser — no API calls, no rate limits, no privacy concerns, and it works offline after the page loads.
How to Use It
- Set dimensions — Enter custom width and height in pixels (up to 4096×4096) or select a preset from 16 built-in sizes covering social media, web banners, and app icons.
- Customize appearance — Choose background and text colors with the color picker, add custom text (or leave empty for auto WxH label), select a font family, and adjust font size.
- Choose output format — Select PNG for lossless quality, JPEG for smaller files, or WebP for best compression. Enable @2x Retina for HiDPI displays.
- Download or embed — Click "Download Image" to save the file, or copy the Data URI to embed directly in HTML or CSS without a separate file.
Common Use Cases
- Wireframing landing pages and prototyping responsive layouts with exact image dimensions
- Creating ad mockups with standard IAB banner sizes (728×90, 300×250, 970×90)
- Testing image upload features and CMS templates during development
- Generating consistent placeholder content for documentation and style guides
- Creating social media dimension guides for marketing teams
- Embedding small placeholder images as Data URIs in HTML email templates
What is the Placeholder Image Generator?
The Placeholder Image Generator is a highly customizable developer tool used to create dummy graphics of any specified size, color, and text. When building websites or application interfaces, developers often need temporary images to fill out the layout before the final assets are delivered by the design team. Instead of relying on external services like "via.placeholder.com" which can slow down local development environments and leak network requests, this tool generates the placeholders entirely locally.
How does it work?
The tool uses the HTML5 Canvas API to programmatically draw a rectangle matching the exact width and height you specify. It then fills the rectangle with your chosen background color and uses the fillText() method to center the custom text (or the image dimensions) directly in the middle using a contrasting font color. The resulting graphic is then converted into a Data URL (Base64) or a downloadable PNG file, all executed within milliseconds by your browser's JavaScript engine.
Common use cases
Frontend developers use the Placeholder Image Generator to mock up grid layouts and hero sections while waiting for final high-resolution photography from the marketing department. UI/UX designers use it to quickly generate standardized "missing avatar" or "no image available" graphics for error states in their web applications. Technical writers use it to generate specifically sized placeholder blocks to test the layout of complex HTML email templates.
What a placeholder is for
A placeholder image fills a content slot with a correctly-sized dummy graphic — usually labeled with its dimensions (800 × 600) — so you can build and evaluate a layout before the real images exist. It keeps spacing, alignment, and aspect ratios honest during design, letting you focus on structure without being distracted by (or blocked on) final assets. This generator produces exact-dimension placeholders with custom colors, text, and presets for common formats.
Size it like the real thing
The point of a placeholder is fidelity to the real slot, so match the dimensions you’ll actually use:
| Preset | Size |
|---|
| Instagram post | 1080×1080 |
| YouTube thumbnail | 1280×720 |
| Open Graph image | 1200×630 |
| Web banner | 728×90 |
| App icon | 512×512 |
Using the true target size means your layout testing reflects reality — a placeholder at the wrong dimensions hides the spacing and overflow problems you’re trying to catch. Enable the @2x Retina option to generate at double density so the placeholder looks crisp on HiDPI screens, just like a properly-sized real image would.
Data URI vs file
The tool can output a Data URI you paste straight into src or CSS url() — handy for throwaway prototypes and email templates because there’s no file to manage and no extra request. The trade-off is that Data URIs bloat your HTML/CSS by ~33% and aren’t cached separately, so for anything beyond quick scaffolding, a real file reference is leaner. Either way, it’s temporary by definition.
Don’t confuse it with a loading state
A frequent mix-up: placeholders are build-time scaffolding, while skeleton screens and LQIP are runtime UX for real users (see FAQ). If your goal is to improve how an image-heavy page feels while loading, you want a skeleton or a blurred low-quality preview of the actual image — not a dummy graphic. And remember the cardinal rule: every placeholder must be replaced with real content before launch. Everything here generates locally via Canvas, so nothing uploads.
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