Placeholder Image Generator
Create dummy images at any size with custom colors and text, entirely on your device.
800×600 preview (scaled)
Generated locally in your browser — nothing is uploaded.
How it works
- Enter a width and height in pixels, or tap a preset like Banner, Square, 16:9 or Story.
- Pick background and text colors, and optionally replace the default size label with your own text.
- Choose PNG or JPG, check the live preview, and press Download to save the image.
Frequently asked questions
- How does this placeholder image generator work?
- The tool draws a rectangle at your exact pixel dimensions on an HTML canvas, fills it with your background color, and centers the label text on top. The preview updates live as you change any setting, and the download is exported straight from that canvas at full resolution.
- Are my settings or images uploaded anywhere?
- No. Everything happens locally in your browser using the canvas element, and no network requests are made. The generated file goes directly from the page to your downloads folder, so nothing about your project ever leaves your device.
- What is the maximum image size I can generate?
- You can enter dimensions up to 5000 by 5000 pixels, which covers banners, social media covers, and print mockups. Browsers cap canvas memory at very large sizes, so the tool limits input to values that render reliably on both desktop and mobile devices.
- Should I choose PNG or JPG for placeholder images?
- PNG is lossless and keeps flat colors and text perfectly crisp, which suits placeholders well. JPG produces smaller files for large dimensions but can add slight compression artifacts around text edges. If your layout tests file weight, JPG mimics real photos more closely.
- Can I use the generated images in wireframes and client projects?
- Yes. The images are generated entirely by you and carry no watermark or license restrictions, so you can drop them into mockups, CMS templates, emails, or test suites. Unlike hotlinked placeholder services, local files keep working offline and never break in a demo.
About this tool
A placeholder image generator creates temporary dummy images at exact pixel dimensions so you can build layouts before the real artwork exists. Instead of hotlinking a third-party placeholder service into your HTML, this tool produces a real PNG or JPG file you own: choose a width and height, pick a background and text color, and download the result. The default label shows the dimensions, such as 1200×630, so anyone reviewing the design immediately knows what size asset belongs in that slot.
The image is drawn with the browser’s canvas API on your own device. When you change a value, the tool repaints a canvas at the full target resolution, fills it with your chosen background, and renders the label in a size proportional to the image so it stays readable from tiny thumbnails to large banners. The download button exports that same canvas with toDataURL, meaning what you see in the scaled preview is exactly what you get at full size. Because no server is involved, generation is instant, works offline once the page has loaded, and nothing you type is transmitted anywhere.
Typical uses include blocking out hero sections and card grids during front-end development, filling CMS templates before editorial images arrive, testing how an email or Open Graph card renders at 1200×630, and creating fixture files for automated tests that need images of a known size. The presets cover the most requested formats: a wide banner, a square avatar or product tile, a 16:9 video thumbnail, and a 1080×1920 story frame.
A few practical tips: keep contrast high between background and text so the label survives aggressive thumbnail scaling; use PNG while iterating because flat colors compress losslessly; and put the intended asset name in the custom text field, for example “hero-desktop”, so teammates know which file eventually replaces each placeholder.