Merge Images Online for Free
Combine multiple images into a single image. Stack photos vertically or horizontally to create before/after comparisons, contact sheets, or simple collages. Our merge tool handles mixed formats and sizes.
How to Merge Images
-
Upload images to merge
Upload 2 or more images. Drag to reorder them in your preferred sequence.
-
Choose layout
Select vertical stack (top to bottom), horizontal stack (side by side), or a grid layout. Set spacing between images.
-
Download merged image
Download the combined image as a PNG (preserves transparency) or JPG.
Features
- Vertical and horizontal image merging
- Drag-to-reorder images
- Adjustable spacing between images
- Auto-scale images to match widths/heights
- PNG or JPG output
Combine Images for Every Use Case
Merging images is useful for creating before/after comparisons, making instructional step-by-step image sequences, combining screenshots, creating simple photo collages, or assembling sprite sheets for web development.
Supported Formats
This tool accepts PNG, JPG/JPEG, WEBP files up to 20 MB per file. Process up to 10 images per batch.
Frequently Asked Questions
-
You can merge up to 10 images in a single operation. For larger numbers of images, merge them in groups and then merge the resulting images together.
-
In vertical mode, all images are scaled to match the width of the widest image. In horizontal mode, they are scaled to match the height of the tallest image. You can also disable auto-scaling to keep original sizes.