Watermark & Overlay
Image Composition
Layer multiple images together with precise control over position, size, opacity, and blending. Place logos on backgrounds, combine overlapping elements, and create composite images. Supports drag-and-drop ordering for intuitive layer management.
Features
- Layer images with precise position and size control
- Opacity and blending mode settings per layer
- Drag-and-drop layer reordering
- Supports transparent PNG overlays
- Batch compose with the same overlay across multiple base images
What you can do
- Composite product images onto lifestyle backgrounds
- Place logos and badges onto certificate templates
- Layer multiple screenshots into a comparison view
- Create image mockups by placing designs onto device frames
Self-hosted. Your images never leave your network.
SnapOtter runs entirely on your own infrastructure. Images processed with Image Composition are never uploaded to third-party servers. Deploy a single Docker container and process images with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- How do I place a logo on a background image?
- Upload the background as the base image and the logo as the overlay. Use a PNG logo with a transparent background. Position it by coordinates or drag it into place, and adjust the size and opacity.
- Can I layer more than two images?
- Yes. Add multiple overlay layers on top of the base image. Each layer has its own position, size, and opacity settings. Drag to reorder layers.
- What blending modes are supported?
- Standard blending modes including normal (opacity-based), multiply, screen, overlay, and more. These control how the overlay pixels interact with the base image pixels.
Ready to try Image Composition?
Deploy SnapOtter in under a minute. All 50+ tools included. Open source and free forever.