Nook Tools

Image Stitcher & Splitter

Combine images vertically, horizontally, or in a grid. Split a long image into numbered parts without losing the final section.

Files and filenames stay in your browser. Your original files are never changed.

Changing the operation clears the current files and results. Changing settings clears previous results.

Settings

Vertical and grid layouts use this as each image’s width; horizontal uses it as the height. Images keep their proportions and may be enlarged. Grid rows center shorter images vertically.

Quality applies to JPEG and WebP. PNG is lossless. JPEG fills transparency with white; re-encoding removes original metadata and color profiles.

Choose files to begin.

How to use

  1. Choose stitching or splitting, then add the supported image files.
  2. For stitching, order images and set layout, size, gap, and background. For splitting, choose direction and the maximum part length.
  3. Generate results, inspect their dimensions and previews, then download individual images or a ZIP.

Formats and limits

Up to 50 static JPEG, PNG, or WebP images; 20 MiB each, 100 MiB total. Each image: 24 megapixels and 32767 px per side.

One static JPEG, PNG, or WebP image; up to 20 MiB, 24 megapixels, and 32767 px per side.

A stitched image must fit within 24 megapixels and 32767 px per side. Split exports allow up to 300 parts. Total output is limited to 128 MiB. Browser canvas limits can be lower.

Stitching uses your chosen order and does not detect overlapping screenshot content. Animated images, GIF, SVG, HEIC, and AVIF are not supported.