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Placeholder Generator

Solid color or gradient placeholders for mockups, designs, and tests.
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About Placeholder Generator

Placeholder Generator — free, private, browser-based image tool

Solid color or gradient placeholders for mockups, designs, and tests. It runs in your browser, so the file is processed on your own device.

Why use Placeholder Generator

  • ·Files stay on your device — nothing is uploaded
  • ·No signup needed
  • ·Works in any modern browser, on any OS
  • ·Free daily use; Pro removes limits and watermarks

How to use it

  1. 1Type or paste your input.
  2. 2Pick the options you want.
  3. 3Download the PNG, JPEG, WEBP file.

What Placeholder Generator does

Solid color or gradient placeholders for mockups, designs, and tests. The result is a PNG, JPEG, WEBP file you download directly.

How it works

Uses Canvas2D and WebGL2 with OffscreenCanvas for parallel processing. Filters run as GPU shaders where supported, falling back to CPU SIMD via WebAssembly. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.

Frequently asked questions

Does Placeholder Generator upload my files?+
No. Placeholder Generator runs in your browser and processes the file on your device. Nothing is sent to our servers.
Is Placeholder Generator free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.

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