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Watermark Image Online

Protect copyright with customizable text stamps, logos, repeating tiled watermarks, and opacity controls.

✓ 100% Free 👤 No Signup ⚡ Fast Canvas Processing 🔒 100% In-Browser Privacy
Image Tools Illustration
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Drag & Drop an Image here or Click to Browse

Supports JPG, PNG, and WebP images.

🔒 Complete Privacy: Photos never leave your device memory.

Why Watermark Images In-Browser?

When posting high-resolution photography, property listings, architectural drawings, or eCommerce product catalog images online, unauthorized reuse is rampant. Watermarking asserts ownership, protects intellectual property, and deters scrapers. AG World Tools draws your text or logo watermark directly onto the image's raw pixel buffer via HTML5 Canvas in your browser. No files are uploaded to remote servers, safeguarding your proprietary media.

🔒 Complete Device Privacy
Photos stay in browser memory with zero network requests. Perfect for confidential corporate designs and family photos.
🛡️ Tile / Full-Image Protection
Enable the repeat tile mode to cover the entire image with diagonal copyright marks, preventing simple cropping.
⚡ Full Resolution Output
The exported image maintains your photo's full native megapixel resolution and sharpness without downscaling.

Frequently Asked Questions

Can I use my transparent company logo as a watermark?

Yes. Click 'Logo Image' and upload any PNG or WebP file with a transparent background. You can scale the logo size and adjust its opacity seamlessly.

Does adding a watermark reduce my photo's resolution?

No. While the on-screen preview is scaled to fit your screen, clicking 'Watermark & Download Image' renders the watermark directly onto the full-resolution source image (e.g., 4000 × 3000 px).