Overlay & Merge Images Online
Securely process, blend, watermark, and overlay two pictures directly in your browser.
Overlay Controls
Merged Output
Overlay, Watermark, and Blend Images
Upload a base photo and an overlay image — a logo, watermark, or texture — then position it, scale it, set the opacity, and pick a blend mode to merge the two together perfectly.
Compositing happens entirely in your browser on a canvas, so both images stay on your device. Apply the overlay and download the merged result.
Position, scale, opacity, blend
Place the overlay exactly where you want it, scale it, adjust transparency, and choose a blend mode for subtle watermarks or bold blends.
Private by design
Both images are composited locally in your browser — nothing is uploaded to a server.
Watermarking made easy
Add your logo or signature to photos before publishing — a quick way to mark ownership and deter unauthorized reuse.
How to use
- Upload your base image.
- Upload the overlay image (logo or watermark).
- Set position, scale, opacity, and blend mode.
- Click Apply, then download the merged image.
Frequently Asked Questions
What is image overlaying?
Placing one image on top of another — commonly used for watermarks, logos, picture-in-picture effects, and creative blends.
Can I control the watermark's transparency?
Yes. An opacity slider lets you make the overlay fully solid or barely visible.
Are my images uploaded anywhere?
No. Overlaying runs entirely in your browser — your images never leave your device.
What blend modes are available?
Several blend modes are offered alongside opacity, so the overlay can sit on top cleanly or interact with the colors beneath.
Is the tool free?
Yes, free with no signup.
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