A fast and privacy-friendly tool to add customizable diagonal watermarks to your images directly in your browser.

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đź”’ Safe

Your images never leave your device. Everything runs locally in your browser, ensuring complete privacy and data security. No uploads, no risks.

⚡ Fast

Apply diagonal watermarks instantly. Our tool is lightweight and optimized for performance—get your results in seconds with zero lag.

👌 Easy to Use

Designed with simplicity in mind. Just upload an image, set your watermark text, choose color and size, and you're done—no technical skills required.

Perfect for developers or designers!


What is PixelSeal?

This is a lightweight watermark generator that lets you apply diagonal watermark text over your images directly in your browser. It's private and fast.

How do I use it?

Simply upload an image, enter your watermark text, adjust the font size and color, and click “Apply Watermark.” You can then download your watermarked image with one click.

Why should I use PixelSeal?

Because it’s private, instant, and effortless. No software installation, no account needed, and your images never leave your device. It’s perfect for quick watermarking with full control over appearance.

Are there any limitations?

There’s no watermark on your output and no limits on usage, but very large images may perform slower depending on your device's memory. Recommended for images under 10MB.