Free online image stitcher: combine screenshots or photos into one long image, vertical or horizontal, with adjustable gap and background. Composited locally in your browser.
TL;DR: Free online image stitcher: merge screenshots and photos into one long image, vertical or horizontal, fully local.
For local tools, open DevTools → Network and search your input — it should not appear in requests.
Next steps
Usage Guide
Chat archives, step-by-step demos, a batch of screenshots for the group chat — one long image beats nine loose files. This tool stitches multiple images in order (vertical long image or horizontal strip) with adjustable gap and background. Canvas compositing, fully local.
1. How to use
- Drop multiple images and reorder with the arrows — list order is stitch order.
- Pick direction (vertical / horizontal), gap, and background; mismatched widths default to uniform-widest.
- Press Stitch, check the preview, download the PNG.
2. Uniform width: the key option for vertical stitches
Screenshot sequences usually share one width and stitch directly; phone photos and mixed sources often do not. Uniform width (on by default) scales narrower images proportionally to the widest, keeping seams smooth. Turn it off to place everything at original size, left-aligned — the ragged edge suits side-by-side comparisons. Gap 8-16px on a light background is the common presentation style; keep gap at 0 for seamless scroll captures.
3. Why stitch instead of scrolling screenshots
Built-in scroll capture depends on smooth scrolling and breaks or misaligns mid-page. Capturing normal screenshots and stitching them keeps every segment complete and reorderable. For chat records and cross-screen content, segment-then-stitch is the dependable archival route — and the most common use of this tool.
FAQ
No. The composite is put together in your browser with canvas — no uploads, and no signup.
No. Images are drawn onto the canvas at their original resolution without recompression (the uniform-width option scales proportionally; everything else stays pixel-for-pixel).
No hard limit; you are bounded by browser memory. Dozens of screenshots are effortless; for thousands or an extremely long strip, stitch in sections to ease memory pressure.
Use the up/down arrows next to each image in the list — list order is stitch order.
Possibly. Some chat apps recompress very long images, so spot-check clarity before sending anything important.
Follow the use case: chat archives and step-by-step demos read best as a vertical strip; pick horizontal when you want side-by-side timeline comparison. Spacing and background color are both adjustable.
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