Merging images — a side-by-side comparison, a before/after, or a simple collage — works best when the pieces share the same dimensions.
Step 1: Make the pieces consistent
Before combining, give each image the same height (or width). Use the Resize Image tool to match dimensions, and Crop Image to match aspect ratios.
Step 2: Combine
Place the matched images side by side in a document, slides, or a layout app, then export the result.
Tips
- Matching dimensions first is the secret to a clean, aligned merge.
- For social layouts and exact sizes, see our resize guides. Related: file size vs dimensions.