Placeholder Image Generator

The Placeholder Image Generator is a free online tool that creates custom placeholder (dummy) images at any dimension, color, and format directly in your browser. You set the width, height, background color, text color, label, and font size, and the image is drawn on an HTML <canvas> and exported as a PNG, JPEG, or WebP — with nothing uploaded to any server.

What is a placeholder image?

A placeholder image is a temporary graphic used to reserve space in a layout before the real photo or artwork is ready. Designers and developers drop them into wireframes, mockups, and prototypes so a page has the correct proportions and visual rhythm while the final assets are still being produced. A typical placeholder shows its own dimensions as a label — like 640x480 — so you can see exactly how much space it occupies.

Because they only need flat color and a bit of text, placeholders can be generated instantly, which makes them perfect for rapid iteration on responsive grids and component libraries.

How to create a placeholder image

1. Enter the width and height in pixels for the image you need.
2. Pick a background color and a text color using the swatches or by typing a hex value.
3. Type custom label text, or leave it blank to display the dimensions automatically.
4. Set a font size, or keep it at 0 so the label auto-fits the canvas.
5. Choose the export format — PNG, JPEG, or WebP — and watch the live preview update.
6. Click Download Image to save the file, or Copy Data URI to grab an inline base64 string.

Why use an offline placeholder generator?

Popular services like placehold.co and via.placeholder.com return images over the network, which means every preview depends on an external request, can be blocked by a firewall, and quietly tells a third party which mockups you are building. This tool draws everything locally, so it keeps working on a plane, behind a corporate proxy, or on a private staging branch — and your design details never leave the tab.

• Fully private: pixels are rendered on your own device with canvas, never fetched from a remote host.
• Instant preview: the image updates live as you change size, color, or text.
• Real files: export a genuine PNG, JPEG, or WebP via toBlob and toDataURL, ready to commit or paste.
• Data URI ready: copy an inline base64 string to embed the image directly in HTML or CSS.

Placeholder generator features

Every control maps to something you actually need in a mockup: exact pixel dimensions for responsive breakpoints, custom colors to match a brand palette, and a label that can read the dimensions or any message you type. The auto-fit font keeps the text crisp whether you are making a tiny 96x96 avatar block or a wide 1920x600 hero banner. When you would rather have a smooth color transition than a flat fill, the PNG Gradient Background Generator produces gradient PNGs the same way, entirely in the browser.

If your mockup needs realistic body copy to sit beside the images, pair this with the Lorem Ipsum Generator to fill paragraphs, headings, and lists. And when you want to embed a generated placeholder inline without saving a separate file, the Copy Data URI button gives you exactly what the Image to Base64 Converter would produce from an uploaded picture.

When to use placeholders vs. real images

Use placeholders while structure matters more than content — during wireframing, when demoing a layout, or when seeding a database with test records that each need an image field. Once you have final artwork, swap the placeholders out; if the real photos are the wrong size, the Image Resizer re-encodes them to your target dimensions in the browser, and the Favicon Generator can turn a finished logo into a complete icon set. Keeping a fast, offline placeholder tool in the loop means you never stall on missing assets while a design comes together.

Frequently Asked Questions

Are my images uploaded to a server?

No. The entire tool runs client-side in JavaScript. The image is drawn on a canvas inside your browser tab and exported locally, so nothing is ever uploaded, stored, or requested from an external service.

What image formats can I export?

You can export PNG, JPEG, or WebP. PNG is lossless and best for sharp text and transparency-free flats; JPEG and WebP are smaller and are exported at high quality (about 92%) for photographic-style placeholders.

What does the Copy Data URI button do?

It copies the image as an inline base64 data URI to your clipboard. You can paste that string straight into an HTML img src or a CSS background, which embeds the placeholder without needing a separate file or network request.

What size placeholders can I make?

Any size from 1x1 up to 4000x4000 pixels. Leave the label text blank to show the dimensions automatically, or type your own text, and keep font size at 0 to let the label auto-fit the canvas.

Is this a good alternative to placehold.co?

Yes. It produces the same kind of custom dummy images but generates them offline, so it works without internet access, cannot be blocked by a firewall, and never shares your mockup details with a third-party service.