Image Stitcher
Locally merge multiple images - long, wide or grid
Click below or drop multiple images here.
🔒 This tool runs entirely in your browser — your data never leaves your device.
Image Stitcher (Long Image / Collage)
Stitch many images into one: vertical for long screenshots, horizontal for timelines, grid for 9-square sharing. Configure gap, padding, background and a uniform max-width. Everything runs in your browser via Canvas - your originals never leave the machine.
- Vertical / horizontal / grid layouts
- Adjustable gap / padding / background
- Uniform max-width auto scaling
- PNG / JPEG / WebP output
- Drag-and-drop multi-select
- 100% local - never uploaded
FAQ
Will my photos be uploaded?
No. All processing happens in your browser via Canvas. It works offline once the page is loaded.
How are grid columns chosen?
If left auto, the tool picks the nearest square (e.g. 9 images -> 3 columns). You can also force 1-6 columns.
My stitched image is too large.
Set 'Uniform max width' to 1200-2000 px. Canvas is limited to about 16384x16384 by browsers.