Merge Images

Vertical, horizontal, and how the canvas is measured

Drop several photos onto the zone or pick them with the file button; JPG, PNG, WebP, GIF and BMP files all load. Each image gets a thumbnail you can remove individually before merging, so a mis-ordered screenshot is easy to drop without starting over. The direction switch has two positions: vertical stacks the tiles top to bottom, and horizontal lays them left to right.

The layout rule is consistent either way. In horizontal mode every image is scaled so its height equals the tallest image in the set, widths grow proportionally, and each tile is vertically centered on the common line. In vertical mode every image is scaled to the width of the widest image, heights shrink or grow proportionally, and each tile is horizontally centered. The canvas width or height is the sum of the scaled tiles plus the gap repeated between them.

• Image spacing runs from 0 to 50 pixels (default 0): set a few pixels when you want visible separation strips between screenshots.
• The background color defaults to white (#ffffff); change it when your tiles have transparent edges or you want a colored margin behind the strip.
• The merged result exports as a single PNG (file name base pixlready-merge), which keeps text and screenshot edges crisp instead of re-compressing them through JPEG.

What people actually merge with this tool

The most common vertical job is a long strip: stacked screenshots of a chat or article, a receipt sequence, or travel photos arranged one above the other for a story post. Horizontal mode is used for side-by-side comparison shots (before/after, two products, two charts) where equal-height alignment matters more than equal width. Because the engine normalizes tiles to one common height or width instead of stretching each image independently, nothing comes out distorted.

If your goal is a 3x3 social grid from one photo instead of a strip, the Nine-Grid Cutter center-crops and slices into nine ZIP-packed tiles. Once the merged PNG is made, run it through the Image Compressor if the destination has a weight limit, or through the Resizer if the strip needs an exact pixel width.

Order, gaps and output details

Tiles are joined in upload order, which is also the order they appear in the list. Because each thumbnail carries a remove button, you can drop the wrong shot and re-add it at the correct position without re-uploading everything else. A gap of 4 to 10 pixels in your chosen background color is usually enough to separate stacked screenshots; at 0 the image edges touch and the strip reads as one continuous canvas.

Horizontal strips normalize to the tallest tile's height, so a wide panorama mixed with a square photo gets scaled down to match and leaves blank vertical bands around it, filled with your background color. Vertical strips behave symmetrically: a tall narrow photo in a wide set leaves side bands. Choosing a background color that matches your destination template (or pure white for the web) hides those bands better than leaving the default.

The PNG export means no JPEG ringing on text edges. If the merged strip is meant for a messaging app that compresses aggressively anyway, you can recompress it afterward without losing the layout; the strip itself is never re-encoded by the merge step.

Combine Multiple Photos Into One Image

Merging stitches several pictures into a single canvas. PixlReady joins images vertically (top to bottom), horizontally (side by side) or into a long-image layout, all in your browser. Control the order, the gap between photos and the canvas background color, then export one combined JPG or PNG; nothing is uploaded.

This is the fastest way to build before-and-after comparisons, step-by-step tutorials, chat-screenshot strips and vertical infographics without opening a design suite.

Tips for best results

• Resize images to a common width first for tidy vertical joins.
• Add a small white gap to separate screenshots cleanly.
• Order files before merging so steps read top to bottom.
• Export PNG for screenshots with text and JPG for photo-heavy strips.

Common use cases

• Before-and-after comparisons for portfolios and listings
• Long tutorial and recipe images for social feeds
• Combining chat or payment screenshots into one image
• Simple vertical or horizontal photo collages

Frequently Asked Questions