Image Merger
Joins several images into one, side by side or stacked vertically, in the order you arrange. Screenshots become one tall capture, photos become a strip — composed on a canvas in your browser.
How to use
- Drop the images to combine.
- Choose horizontal or vertical joining.
- Order the list; the output follows it left-to-right or top-to-bottom.
- Download the combined image.
When you actually need this
- Stitching sequential screenshots of a long chat or page into one scroll.
- Making a before-and-after pair into a single side-by-side frame.
- Building a horizontal strip of product angles for a listing.
- Combining step screenshots into one image for a quick tutorial post.
Mind the mismatched sizes
When images differ in size, the join aligns them along the shared edge and the output grows to fit the largest — a mix of resolutions produces steps in the outline and awkward scaling. For a clean result, resize the pieces to a common height before joining horizontally, or a common width before joining vertically. The output is a plain flattened image; if what you actually need is pages in a document, image-to-PDF keeps each picture on its own page instead.
Related tools
FAQ
Are my photos uploaded to a server when I use Image Merger?
No. Image Merger reads the file with the browser's Canvas API and processes every pixel on your own device. The image never leaves your computer, which is why it still works if you go offline after loading the page.
Will Image Merger reduce the quality of my image?
That depends on the setting you choose. JPEG and WebP are lossy, so a lower quality value means a smaller file and more visible artifacts; PNG is lossless and keeps every pixel exactly. Start around 80 percent quality — most photos stay visually identical at roughly a third of the original size.
Is there a file size or count limit?
There is no limit imposed by the site, because nothing is uploaded. The practical ceiling is your device's memory — very large files (over roughly 50 MP) may be slow on an older phone.