Image Overlay & Blend Tool - Blend Two Images Online

Blend Two Images Online

Blend two images directly in your browser using professional blend modes. Stack a base photo and an overlay, then mix them with Multiply, Screen, Overlay, and 13 more modes to build double exposures, texture effects, and creative composites.

You stay in control of how the layers interact: adjust the overlay's opacity, scale, and position, swap which image sits on top, and watch the canvas update in real time. When you are happy with the result, export it as PNG, JPEG, or WebP at the full resolution of your base image.

Private by design: all blending happens locally in your browser with the Canvas API. Your images are never uploaded to a server, and nothing is stored or tracked.

How to Overlay and Blend Images

Upload the base image

Drop your base image onto the upload zone or click to choose a file. This becomes the background layer. PNG, JPG, WebP, GIF, and BMP are all supported.

Add the overlay image

Use the overlay upload zone to add a second image. It is blended on top of the base and automatically scaled relative to it, so the two images do not need to match in size.

Choose a blend mode

Pick from 16 blend modes grouped into Normal, Darken, Lighten, Contrast, Comparative, and Color. The canvas updates instantly as you switch modes.

Fine-tune opacity, scale, and position

Set overlay opacity from 0 to 100%, scale it between 10% and 200% (with quick presets), and place it using the 9-point grid or by dragging directly on the canvas.

Download your blend

Choose PNG, JPEG, or WebP, adjust the quality for JPEG and WebP, and download. The exported image keeps the full resolution of your base image.

Features

Base and Overlay Upload

Load a base image and an overlay by dragging and dropping onto the upload zones or clicking to browse.

16 Blend Modes

Normal, Multiply, Screen, Overlay, Darken, Lighten, Color Dodge, Color Burn, Hard Light, Soft Light, Difference, Exclusion, Hue, Saturation, Color, and Luminosity.

Opacity Control

Slide overlay opacity from 0% to 100% to control exactly how visible the top layer is.

Scale with Presets

Resize the overlay from 10% to 200% of the base, with quick preset buttons at 25, 50, 100, 150, and 200%.

Precise Positioning

Snap the overlay with a 9-point position grid or drag it freely on the canvas for pixel-level placement.

Swap Layers

Reverse the base and overlay with one click to instantly see the blend with the layer order flipped.

Real-Time Preview

Every change to blend mode, opacity, scale, or position renders on the canvas immediately — no processing wait.

PNG, JPEG, or WebP Export

Download as lossless PNG or as JPEG/WebP with an adjustable quality slider, at the base image's full resolution.

Fully In-Browser

Images are processed entirely on your device with the Canvas API — nothing is uploaded.

Frequently Asked Questions

How do I blend two images together?

Upload a base image, add an overlay image, then pick a blend mode. The two layers are mixed on the canvas right away. Adjust opacity, scale, and position until the blend looks right, then download the result.

How do I overlay one image on another with transparency?

Use the opacity slider to make the overlay semi-transparent anywhere from 0% (invisible) to 100% (fully visible). Keep the blend mode on Normal for a straight transparent overlay, or combine opacity with a blend mode for a more creative mix.

What blend mode should I use?

Multiply darkens and is good for shadows and textures. Screen brightens and suits light effects. Overlay and Soft Light give a balanced contrast boost. For abstract looks, try Difference or the Color and Hue modes.

Can I blend images of different sizes?

Yes. The overlay is automatically scaled relative to the base image. You can further resize it with the scale slider (10–200%) and place it anywhere using the 9-point grid or by dragging it on the canvas.

What formats can I export, and will quality drop?

You can export PNG, JPEG, or WebP. PNG is lossless with no quality loss. For JPEG and WebP, a quality slider (10–100%) lets you balance file size and detail. The output always matches the resolution of your base image.

Is it free, and are my photos uploaded?

It is free to use with no sign-up. All processing happens locally in your browser using the Canvas API, so your images never leave your device and nothing is sent to a server.

What is the maximum image size I can blend?

Because everything runs in your browser, the limit depends on your device's available memory. Most modern devices handle images up to around 4000×4000 pixels comfortably.