Preserve a chat history
Stitch several screens of chat screenshots vertically into one long image and send it in a single message.
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Guide
Long Image Stitch joins several images end to end into one: vertically into a long image (most often chat histories or a page captured in sections) or horizontally into a banner. Before stitching, every image is brought to the same width (vertical) or height (horizontal) with the other side scaled proportionally, then placed in order with an optional fixed-pixel gap. Processing happens locally in the browser.
Updated 2026-09-093 min read
Long Image Stitch joins several images end to end into one: vertically into a long image (most often chat histories or a page captured in sections) or horizontally into a banner. Before stitching, every image is brought to the same width (vertical) or height (horizontal) with the other side scaled proportionally, then placed in order with an optional fixed-pixel gap. Processing happens locally in the browser.
It is the exact opposite of “Grid Cut” (one image into many), and unlike a free-layout collage poster it only arranges in one dimension — no overlap, rotation or templates.
| Input | Output | Notes |
|---|---|---|
| Five 1080-wide phone screenshots, vertical, smallest, gap 0 | One long image 1080 wide by the sum of the heights |
Nothing is scaled when the widths already match |
| Three screenshots 1920, 1440 and 1080 wide, vertical, smallest | All scaled to 1080 wide before stitching |
Neither enlarged nor cropped |
| 200 screenshots whose total height exceeds 16384 | A warning that the canvas limit is exceeded; the export is scaled down as a whole |
The result notes that it was scaled down |
Stitch several screens of chat screenshots vertically into one long image and send it in a single message.
Join page sections captured one by one into the complete page in order.
Put two or three before-and-after photos side by side horizontally with a 20 px white gap.
Join several designed module images vertically into one detail page.
The unified width defaults to “smallest”, so anything wider is scaled down to it. To keep a large image sharp, switch to “largest” or “custom”.
Only PNG supports transparency, and the switch is turned off automatically when the output format is JPG.
Most platforms have a pixel or file-size limit; cap the longest edge with “Resize Images” first, or stitch it in two parts.
Stitching is done locally in the browser on a canvas and screenshots and photos are never uploaded to any server; they are released when the page is closed.
Updated 2026-09-09
Join several images vertically or horizontally into one; drag to reorder, set gaps and background