Why I Built This Image Merger
Have you ever wanted to put two photos side-by-side to show a "Before and After," but you didn't want to download Photoshop or pay for a mobile app subscription? I definitely have. That's exactly why I built this image merging tool—I just wanted a quick, easy way to drop some photos onto a canvas, arrange them, and download the result.
Unlike a lot of other free tools, this entire editor runs locally right inside your web browser. When you upload your photos, they never leave your device. I don't see them, and no server stores them. It's completely private, fast, and totally free to use.
How to Make a Collage (Without the Hassle)
1. Setup Your Canvas
Start by picking a canvas size in the sidebar. You can make it an Instagram square, a Facebook banner, or just set your own custom pixel dimensions.
2. Drop In Your Photos
Hit "Add Image Layer" and select the pictures you want to merge. You can drag them around, drag the corners to resize, and even rotate them. The tool places them in a rough grid to start, so nothing gets lost.
3. Add Some Text
Want to add a watermark, or a title? Click "Add Text." You can customize the font color, turn the text bold, and drag it exactly where you need it on the photo.
4. Export Your Final Image
When you're happy with how everything looks, just smash the "Export PNG" button. Your merged image downloads instantly—no sign-ups holding you back.
What People Are Using This For
Before & After Posts
Perfect for fitness progress pics, DIY room renovations, or makeup transformations. Just drop two photos and line them up.
Product Listings
Selling something online? Combine the front, back, and side views of your item into one single image for Etsy or eBay listings.
Meme Creation
Drop a reaction image below a screenshot of a funny tweet. Add some text. Boom, you've made a custom meme.
Receipt Combining
If you have multiple small receipts to submit for expenses, just merge them all onto one 8.5x11 vertical page and export.
Watermarking Photos
Upload your photography, add a text layer with your name, lower the opacity by using a transparent background, and save.
Social Media Banners
Set a custom canvas size for X (Twitter) or YouTube, layer in your logo and headshot, and instantly upgrade your profile.
💡 My Tips For Better Merges
Use the Crop Tool
If one image is too tall, select it, turn on "Crop Mode" (the little crop icon), and drag the edges in so everything lines up perfectly.
Managing Layers
If an image is hiding behind another one, select it and use the "Up/Down" arrows right above the properties panel to bring it to the front.
Transparent Backgrounds
Want to merge images and slap them onto a website? Turn on "Transparent Background" in the settings so it exports as a clear PNG.
Use Presets
Don't guess what size an Instagram post is. Just use the preset dropdown in the sidebar and it will resize the canvas automatically.
Common Questions
Are you seriously not storing my photos?
I am seriously not. This tool is built entirely in JavaScript using HTML5 canvas. The browser physically draws the images onto your screen and my servers never touch them. Your data is 100% private.
Why is it lagging?
Performance is bound by total canvas pixel volume, not layer count alone. Roughly 10 layers at or below 1920x1080 stays responsive on a typical laptop. Twenty layers of 4K source images, at about 8.3 megapixels each, means the browser is compositing over 160 megapixels on every redraw, which is what you feel as lag. Downscale your sources to the largest size you actually need first — the canvas preset you export to, such as Instagram at 1080x1080, is the practical ceiling.
How do I crop part of a picture out?
Click on the image you want to crop. A little menu will pop up near it. Click the crop icon, and you will see orange handles appear on the edges. Drag those to hide parts of the picture.
Oops, I made a mistake. How do I undo?
Check the top toolbar above the canvas — there are Undo and Redo buttons. You can also use CTRL+Z, or CMD+Z on a Mac, to quickly step back.
Will this work on my phone?
Technically yes, but dragging and dropping five photos around a tiny phone screen is pretty hard. I definitely recommend doing this on a tablet or a computer with a mouse for the best sanity.