Combining multiple images into one is one of the most common image tasks: a nine-grid for Moments, comparison shots for a proposal, multi-page documents into one image. An image merge tool does exactly that.
This guide covers common merge scenarios and how to pick the right mode.
Common merge scenarios
- Social collage: multiple photos into a nine-grid or collage
- Comparison images: before/after, A/B side by side
- Long images: chat records, screenshots stitched vertically
- Summary images: multiple diagrams shown together
Different merges need different tool modes.
Three ways to merge
The PixelForge Image Stitching Tool supports three common modes:
Vertical stitching
Images stack top to bottom into one long image. Great for chat records, screenshots and multi-page documents. Choose "vertical stitch".
Horizontal stitching
Images line up side by side into one wide image. Great for comparison shots, timelines and banners.
Grid / collage
Images arranged in a grid (nine-grid, etc.). Great for social posts and portfolio showcases — more lively.
Merge by scenario
Comparison images
Before/after and effect comparisons are clearest side by side — one image left, one right, the difference is obvious.
Social posts
Use the grid collage — nine images into one, tidy and attractive. Or a long-image stitch for a vertical sequence.
Document transfer
Stitch screenshots/pages vertically into one long image — one file to send, no flipping.
Combine merge with other tools
Merged images often need a second pass:
- Edges misaligned? Trim with the crop tool
- Long image too big? Reduce with online compression
- Need branding? Batch-add with the watermark tool