One screenshot rarely tells the whole story. A support ticket needs the full fourteen-message chat. A tutorial needs every step of a long form. A funny thread needs all of it, in order, in one place. Send the screenshots one by one and the reader opens fourteen attachments, loses the order, and misses the middle. Stitch them together and the whole conversation becomes a single tall image that scrolls like the chat itself. Our free LongShot Stitcher does exactly that in your browser — drop, browse or paste your screenshots in reading order, set the width and the spacing, and download one PNG or copy it straight to your clipboard. Nothing is uploaded at any point. This guide explains how to stitch screenshots together with it, how the stitching works, the width and spacing choices that make a tall image readable, and the limits worth knowing before you build a very long one.
Step one: add your screenshots. Drop screenshots onto the page, click to browse, or paste straight from your clipboard with Ctrl+V — a chat thread, a long article, a multi-screen form. Add them in top-to-bottom reading order; use the arrows to reorder any shot, or remove one that does not belong. Step two: tune the layout. Choose the output width: fit to the narrowest screenshot, fit to the widest, or set your own custom width in pixels. Add a little spacing between shots — 8 to 16 pixels reads well — and pick a background colour for the gaps. Step three: share it. The preview updates instantly as you change anything, and the exact pixel dimensions of the result are shown under the preview before you download, so there are no surprises. One click downloads the combined PNG, or copy it straight to your clipboard and paste it into any chat.
Every screenshot is drawn onto a single tall canvas in your browser. Each image is scaled proportionally to your chosen output width — nothing is stretched — and stacked with your spacing between them. The final height is simply the sum of the scaled heights plus the gaps, and the exact pixel dimensions are shown under the preview before you download. Because everything runs on canvas locally, the page keeps working even if your connection drops, and your screenshots never leave your device. The proportional scaling is the part that matters most: a screenshot that is 1170 pixels wide and one that is 800 pixels wide both end up at the same output width, each keeping its own aspect ratio, so text stays readable and nothing looks squashed. "Fit to narrowest" avoids upscaling the smaller shots; "fit to widest" keeps the largest shot at full size and scales the rest up to match.
A support agent needs to send a client the full text of a 14-message chat. Each phone screenshot is 1170 × 2532. She drops all 14 in order, picks "narrowest" width — all shots are identical, so no scaling happens — sets 12 px spacing on a white background, and downloads. The result is a single 1170 × 35,616 px PNG — tall but perfectly readable — at about 2.1 MB. The client scrolls one image instead of opening fourteen attachments, the messages stay in order, and nothing is lost between files. The same pattern works for a long article split across screens, a multi-step form filled in over several pages, or a thread you want to keep as one image: the stitch turns a sequence into a document, and the document is easier to read, forward and archive than the pile it came from.
The three layout choices each do one job. Width decides readability: match the narrowest shot when your screenshots are the same size, which is the common case, and nothing is rescaled at all; match the widest when one shot carries fine detail you cannot afford to shrink; set a custom width when the destination has a fixed size, such as a forum that downscales anything wider than 1000 pixels. Spacing decides whether the seams are visible: 8 to 16 pixels reads well, a thin clean gap that separates one shot from the next without wasting height. Background colour decides what the gaps look like: white for documents and light-mode chats, a dark colour for dark-mode screenshots, so the seams blend instead of flashing. Check the preview at full size before you download — the seams, the order and the readability are all visible there, and fixing them costs a click, while fixing them after you have sent the image costs a second message.
Adding shots out of order. The stitch stacks in the order you add them, so a shot dropped in the wrong place breaks the story. Use the arrows to reorder, and read the preview top to bottom before downloading. Stitching a landscape shot into a narrow phone width. Mixed portrait and landscape shots stack fine, but a wide landscape screenshot scaled to a narrow phone width becomes a thin strip; cropping the landscape shot first gives a better result. Building one giant stitch. Browsers cap canvas sizes — around 16,000 pixels per side in some engines — so an extremely long stitch can fail on older devices. If the preview struggles, stitch in two halves. Copying to the clipboard in the wrong browser. Some browsers, notably Firefox and older Safari, do not support writing images to the clipboard. In that case just use Download PNG — the file is identical. Sending without checking the preview. A duplicated shot, a missing message, a seam in the wrong place — all visible in the preview, all invisible once the image is sent. Thirty seconds of checking saves a correction message.
The honest limits are three. First, browsers cap canvas sizes, around 16,000 pixels per side in some engines, so extremely long stitches can fail on older devices — if the preview struggles, stitch in two halves and send two images instead of one. Second, there is no hard limit on how many screenshots you can stitch, but very tall results — tens of thousands of pixels — can get heavy for your browser, so try fewer shots or a smaller custom width if the page slows down. Third, stitching is vertical only — for side-by-side comparisons, a collage tool is the better fit. Within those limits, the tool does one job completely: a stack of screenshots becomes one tall, readable, shareable image, with the exact dimensions shown before you download and nothing ever uploaded. Two companion guides cover the neighbouring jobs: our meme guide shows how two frames and a caption do the same storytelling job in miniature, and our photo mosaic guide turns a pile of photos into a single picture of a different kind.
Pick a background, write the setup and punchline, and download a clean 600x600 PNG.
Build a real photo mosaic from your own pictures — a master photo plus 4 to 60 tile photos.
Design a 1280 x 720 YouTube thumbnail that survives the small-screen test.