Free Online Tool
Overlay Images
Composite one image on top of another with adjustable opacity, position, and blend modes. Free, no signup, no upload to servers.
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Upload Base Image
Drop a base image here or click to upload
Supports JPG, PNG, WebP
Settings
Layer Compositing
Place one image on top of another with precise positioning. Drag to move, resize by pulling corners.
100% Private
All compositing happens in your browser. Images never leave your device — nothing is uploaded to any server.
Drag & Resize
Reposition and resize the overlay image directly on the canvas with intuitive drag controls.
Multiple Formats
Works with JPG, PNG, and WebP images. Output is saved as high-quality PNG to preserve transparency.
Opacity Control
Fine-tune overlay transparency from 0% to 100% with a smooth slider for the perfect blend.
5 Blend Modes
Choose from Normal, Multiply, Screen, Overlay, and Soft Light for creative compositing effects.
How It Works
Upload Base Image
Drag and drop or click to select your base (background) image.
Add Overlay
Upload a second image to overlay on top of the base image.
Adjust Settings
Set opacity, choose a blend mode, and drag the overlay to position it.
Download
Click download to save the composited result as a PNG file.
Frequently Asked Questions
The tool uses HTML5 Canvas compositing to layer one image on top of another. You can adjust opacity, position, size, and blend mode — all processing happens in your browser.
Blend modes control how two layers interact visually. Normal places the overlay directly on top. Multiply darkens, Screen lightens, Overlay adds contrast, and Soft Light creates a subtle blend effect.
Yes! PNG images with transparency work perfectly. The transparent areas of the overlay will show the base image underneath.
There is no strict limit, but very large images may be slow to render depending on your device. The canvas is sized to match your base image dimensions.
Yes. Merging places images side by side or stacked. Overlay composites one image on top of another, with opacity and blend mode control for creative effects.
No. All processing happens entirely in your browser using the Canvas API. Your images never leave your device.
Ready to Overlay?
Upload two images and composite them together with full control over opacity and blend modes.