Placeholder Image Generator
Generate a placeholder image at any size, with dimension labels or your own text, for mockups and wireframes — instantly, with no external service.
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About this placeholder image generator
A placeholder image fills the space where real content will eventually go — a hero banner, a product photo, a social share preview — while a design or a page layout is still being built. This one draws the image directly in your browser using canvas, rather than pulling it from an external placeholder service, which means it works offline, has no rate limit, and produces an actual downloadable file rather than a live URL that depends on a third-party service staying online.
Pick one of the common preset sizes — small mockup sizes, a 1200×630 social share image (the standard Open Graph preview size most platforms expect), a 1080×1080 square for Instagram-style layouts, or full 1920×1080 — or set any custom width and height up to 4000 pixels. By default, the image shows its own dimensions as the label text, which is often exactly what's useful while wireframing (so you can see at a glance what size each placeholder represents), but you can replace that with any custom text instead, such as "Hero image" or "Logo here," to label a mockup more descriptively. Text size scales automatically with the image dimensions, so a small thumbnail-sized placeholder and a full-size banner both get readable, proportionate labels without any manual adjustment.
PNG is the better choice for this kind of image almost always — a solid color block with flat text compresses perfectly and losslessly as PNG, with no visible quality loss. JPEG is offered for situations where a workflow specifically requires a .jpg file.
Nothing about this tool involves uploading anything; there's no input data at all beyond the settings you choose, and the image is generated and downloaded entirely on your device.
The label text's size is calculated from the smaller of the two dimensions, then kept within a readable range regardless of extremes — a tiny 50×50 icon-sized placeholder and a 4000-pixel-wide banner both get sensible, legible text rather than either vanishing or overflowing the image.
Frequently asked questions
What is a placeholder image actually used for?
Filling a space in a design, wireframe, or prototype where real content (a photo, a banner, a logo) will eventually go, so the layout can be reviewed and built before that final content is ready.
Can I show custom text instead of the dimensions?
Yes. Leave the text field blank to show the image's width and height automatically, or type anything you'd like instead, such as a label describing what will eventually go there.
What sizes can I generate?
Any custom width and height up to 4000 pixels each, or one of the built-in presets covering common mockup sizes, social share images, and square or widescreen formats.
Should I choose PNG or JPEG?
PNG, in almost every case — a flat color background with text compresses perfectly with no quality loss. Choose JPEG only if a specific workflow requires a .jpg file.
Does this need an internet connection?
No. Unlike hosted placeholder-image services, this generates the image entirely in your browser using canvas drawing, so it works offline and never depends on an external service being available.