Stitch Images
Join several screenshots or photos into one long image. Overlapping parts and repeated top and bottom bars are found and removed, and you can stitch vertically or side by side, match widths, split the result or save it as a PDF. Your images are never uploaded.
Your files never leave this device. Everything is processed inside your browser and nothing is uploaded to a server.
When to use Stitch Images
Turn a long chat or article into one image
If you took several screenshots while scrolling through a chat or a long page, join them into one image to send or keep. Overlapping parts and the status bar, title bar and tab bar that repeat on every shot are found and kept only once.
Make product detail or notice images
When several images need to be stacked, such as an online store detail page or a notice, set a width like 860px, add a gap and background color, and make one image.
Put photos side by side
Join before-and-after shots or product photos side by side to compare them at a glance. They are matched to the same height, so photos of different sizes line up neatly.
How to use the Stitch Images tool
- Click "Choose image files" or drag images onto the page. They go into the list in order from the top, and you can change the order with the ↑ and ↓ buttons.
- Choose the direction. When stitching vertically, overlapping parts of screenshots are found automatically and the height to cut off is filled in at each seam. You can change the numbers while watching the preview.
- Choose the width, gap, background and format (JPG, PNG, WebP or PDF). If the result is very long, turn on "Split a long result into several images".
- Click "Stitch", then "Download". If you split the result, use "Download all" to get one ZIP file.
Frequently asked questions
How are overlapping parts found?
Rows that are the same at the same height in two screenshots are treated as fixed bars (status bar, title bar, tab bar). The longest stretch where the end of the upper shot matches the start of the lower shot is treated as the overlap. Parts that change on every shot, such as the clock, are skipped. Only images of the same width are checked, and a match of blank space alone does not count as an overlap.
The automatic result is wrong.
Each seam in the list shows how many pixels are cut off from the bottom of the upper image and the top of the lower image. Change the numbers and the preview updates right away, or click "Use automatic values" to go back. If you turn off automatic removal, nothing is cut off.
Can I stitch images of different sizes?
Yes. Images are matched to the same width when stitching vertically and to the same height when stitching horizontally. Matching the narrowest (shortest) image shrinks the larger ones, while matching the widest image or a custom size enlarges the smaller ones. Enlarged images may look blurry, so the tool tells you when that happens.
Can I make a very long image?
PNG results are drawn and saved bit by bit, so they can be very long. JPG allows up to 32,767px and WebP up to 16,383px in one image, so for longer results save as PNG or split them. When splitting, each cut is made at a blank line within the height you set so lines of text are not cut in half. Some sites shrink very long images, so splitting them often makes them easier to read.
What happens if I save as PDF?
The vertically stitched result is split into A4-shaped pages in one PDF, again cutting at blank lines. This is handy for printing or sending screenshots as a document.
Are my images uploaded?
No. Finding overlaps, stitching and saving all happen in this browser, so you can safely use screenshots of chats or personal information.
Are my files uploaded to a server?
No. Files are processed only inside your browser and are never sent to any server. Only the code and character mapping data needed for processing are downloaded from this site; your files themselves never leave your device. You can check this yourself in the Network tab of your browser's developer tools.
Are my files safe even with ads on the page?
Yes. Ads only run outside the tool area. The tool area, where you choose and process files, is an isolated space your browser keeps separate, so other scripts on the page, including ads, cannot read your file content or file names. The tool area is blocked from connecting anywhere other than this site. When you drag a file onto the page, the tool area expands to fill the screen so the isolated space receives the file.