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Placeholder Image Generator — Custom Size PNG Placeholders

Generate placeholder images of any width and height directly in your browser — no upload, no signup, no external image service. Pick a background color and text color, set custom label text or let it auto-fill with the image dimensions, and adjust font size to taste. The result renders live on a canvas so you can preview it before downloading a PNG. It is a fast substitute for placeholder services when mocking up layouts, wireframes, or design comps that need a quick stand-in image at an exact size.

Features

  • Any dimensions

    Set an exact width and height in pixels, from tiny thumbnails to large hero banners.

  • Custom colors

    Pick background and text colors with a color picker or type a hex value directly.

  • Auto or custom label

    The label defaults to the image dimensions and updates live, or type your own text.

  • Adjustable font size

    Font size scales automatically with image size, or override it with a manual value.

  • No upload, no network

    Everything is drawn locally with the Canvas API — nothing is sent to a server.

How to generate a placeholder image

Create a custom-size placeholder PNG in the browser.

  1. Set width and heightEnter the pixel dimensions you need for the placeholder.
  2. Choose colorsPick a background color and a text color using the color pickers or hex inputs.
  3. Set the labelLeave the label blank to show the dimensions automatically, or type custom text.
  4. Adjust font sizeFine-tune the font size if the auto-computed size does not fit your needs.
  5. DownloadClick Download PNG to save the generated placeholder image.

Examples

Hero banner placeholder

Input
width: 1200, height: 400, label: "Hero Banner"
Output
placeholder-1200x400.png

Useful for blocking out layout space before final artwork is ready.

Square thumbnail placeholder

Input
width: 150, height: 150, label: auto
Output
placeholder-150x150.png (label reads "150 × 150")

Frequently Asked Questions

Are the images uploaded anywhere?
No. The placeholder is drawn entirely in the browser using the Canvas API. Nothing is uploaded or sent to any server.
What image format is generated?
The download is a PNG file named placeholder-{width}x{height}.png, matching the dimensions you set.
How is the default label text chosen?
If you leave the label field empty, it automatically shows the current width and height, e.g. "600 × 400", and updates live as you change the size.
How is the font size calculated?
By default, font size is computed as roughly the smaller of width or height divided by 8, clamped to a sensible range. You can override it by typing a manual value, and reset to automatic with the Auto button.
Is there a maximum size limit?
Width and height are capped at 4000 pixels each to keep the canvas responsive in the browser.
Can I use hex codes instead of the color picker?
Yes. Each color has both a native color picker and a text field where you can type a hex value directly, such as #1e293b.