ImgBox

Long Image Stitch

Online long-image stitch: upload several images and join them end-to-end into one long image, vertical (top-bottom) or horizontal (left-right), with adjustable gap, alignment and edge scaling. Unlike Grid Collage, this makes a single long strip. In-browser, zero upload.

Images are stitched front to back — drag the thumbnails to reorder.

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Related Tools

▦Grid Collage↧Long-Image Compress⊞Grid Split (9-grid etc.)

How to use

Purpose

Stitch multiple images vertically (long image), horizontally (wide panorama), or in a grid — all local processing. Perfect for combining WhatsApp / WeChat chat screenshots into one shareable long image, joining browser-screenshot sections, or merging product detail shots into one composite. Each sub-image's position, gap, and rotation independently adjustable.

Steps

  1. Upload multiple images (2-20)
  2. Pick layout: vertical (long image) / horizontal (wide) / grid
  3. Drag to reorder, adjust per-image gap, rotation
  4. Pick background fill color (white / transparent / custom)
  5. Optional: per-image border / shadow
  6. Export JPG / PNG

FAQ

How to stitch chat screenshots into one long image?
Pick 'vertical stitch', drop screenshots in chronological order, ensure consistent width (typically 1080px), tool composites them seamlessly.
Will the stitched image be huge?
10 screenshots @1080×2400 stitched = 1080×24000 long image; JPEG quality 80 ≈ 5-10MB. Run through the long-image-compress tool to shrink.
Maximum stitched length?
Tested up to 50,000 pixels. Limited by browser Canvas size (Chrome ~16384, Safari ~4096). For very long stitches, use the long-image-compress segment approach.
Does stitching degrade quality?
Vertical/horizontal stitch is pixel-exact joining, no quality loss. Only JPEG re-encoding at export adds minor compression; choose PNG for completely lossless.
Difference vs grid-split?
Stitch = combine many → one. Grid-split = cut one → many. Inverse operations.

Use cases

  • WhatsApp / WeChat chat history long image
  • Full-page web screenshots joined
  • Product detail shots into a composite hero
  • Before / after comparison panel
  • Tutorial steps merged into one infographic

Use cases

Chat screenshots, web captures, product detail strips, before/after — vertical / horizontal / grid stitch with gap + border. Combine with long-image-compress for shareable size.