Combine Images Online — Free Image Joiner
Combine multiple images into one with this free online image joiner. Arrange them side by side, stacked vertically, or in a grid, adjust spacing and background color, and download as PNG. Everything runs in your browser — no images are uploaded to a server.
What Is an Image Joiner?
An image joiner lets you combine several separate image files into a single output image. Choose from three layouts — side by side, stacked vertically, or arranged in a grid — and freely adjust the spacing between images and the background color.
It is useful whenever you want to present multiple images as one: before-and-after comparisons, a single collage for a social media post, or several screenshots combined into one reference image. Everything happens in your browser, so there is no need to upload your images to an external server.
How to Use It
- Add your images Drag and drop images onto the drop zone, or click it to choose files. You can select multiple images at once.
- Choose a layout Pick "Side by side," "Stacked," or "Grid." If you choose Grid, you can also set the number of columns.
- Adjust spacing and background Use the slider and color picker to set the spacing between images and the background color of any padding.
- Reorder if needed Use the up/down arrow buttons in the image list to change the order the images are combined in.
- Download the result Once the preview looks right, click "Combine & Download" to save the result as a PNG file.
Tips for getting more out of it
- In side-by-side and stacked layouts, images are scaled down to match the smallest image among the selection — they are never enlarged, which keeps quality high.
- The grid layout automatically starts with a column count close to the square root of the number of images, but you can change it freely in the columns field.
- Want to reorder your images? Use the up/down arrow buttons in the list — no drag-and-drop needed.
- Use "Side by side" for before/after comparisons, or "Stacked" to create a tall image suited for social media posts.
- Changing the background color lets you adjust the color of the padding that appears when combining images with different aspect ratios in a grid.
Use Cases
Before-and-after comparisons
Place two photos — such as before/after treatment shots or progress photos — side by side to make the difference obvious at a glance.
Social media collages
Combine several photos into a single image before posting, saving timeline space while keeping related photos grouped together.
Documenting screenshots
Stack or grid multiple screen captures into a single image for step-by-step guides or bug reports.
Product catalogs and comparisons
Arrange several product photos in a grid to create a single comparison image showing color or size variations at a glance.
Frequently Asked Questions
Side Note — The Tradition of the Contact Sheet
In the days of film photography, photographers would print every frame from a roll of film onto a single sheet of paper as a small grid — a "contact sheet" — to review an entire shoot at a glance. Even now, in the age of digital cameras and smartphones, that same idea of laying multiple shots side by side is still the easiest way to compare them.
The grid layouts often used in photo magazines and product catalogs guide the eye in a predictable top-to-bottom, left-to-right pattern, which makes it easier to take in several pieces of information at once. If you have three or more images to compare, choosing the grid layout in this tool tends to make them easier to scan.
Posting several photos as a single combined image on social media saves space in the timeline and keeps related photos visually grouped together. It is a popular technique for travel memories, before-and-after shots, and product comparisons where showing a set of images together tells a clearer story than posting them one by one.