🧩 Merge Images

Step-by-step

1. Select the images in order The layout order is the order you select them in, and most systems sort by filename. The reliable way to control it is to rename them 01, 02 and select them all at once.
2. Choose a direction Vertical makes one long image — the right choice for chat screenshots and step-by-step guides. Horizontal makes a wide strip for comparisons and panoramas. Grid arranges them into columns as a collage.
3. Decide how mismatched sizes are handled Scale to match is the default and usually right — stacking vertically, every image is brought to the same width so the edges line up. "Keep original sizes" leaves each at its own size, centred, with the background colour filling either side.
4. Set the gap and background (optional) A gap of 0 joins them seamlessly, which suits images that were continuous to begin with. To make each one read as a separate panel, use 10–20 with a contrasting background.
5. Run it and download You get one combined image. If the result would exceed what your browser can handle, it is scaled down proportionally rather than coming back blank.

When you would use this

Why merge at all

Combining a related set of images into one solves a single problem: whether the other person actually sees all of it. Post nine screenshots separately and most readers stop after two. Merge them into one long image and a single scroll covers everything — with no room for anyone to wonder whether you left a piece out.

Chat screenshots make this vivid. Posted separately they invite accusations of cherry-picking; merged, the context is complete. Tutorials work the same way — one image from start to finish beats nine that the reader has to sequence themselves.

Why alignment matters

Stacking vertically with mismatched widths gives you a ragged, sawtooth edge. It happens constantly when merging screenshots, because a phone capture is around 1170px wide while a desktop one might be 2560px.

The default "scale to match" brings everything to the width of the narrowest image. Nothing gets enlarged (enlarging softens), and the edges line up exactly. The cost is that wider images are reduced and lose a little detail — a trade that is almost always worth it against a ragged edge.

Gap or no gap

Zero gap suits images that were continuous to begin with: segments of a panorama, pieces of a split image, a scrolling capture in parts. The result reads as one complete picture.

10–20px with a background colour suits genuinely separate content: conversations from different times, product shots from different angles, before-and-after pairs. The whitespace tells the reader these are distinct images rather than one continuous view.

Frequently asked questions

What you might need next

Image work rarely ends in one step. These pair up with Merge Images most often:

• 🔲 Split into Grid — Cut into a 3×3 Instagram grid
• 📄 Images to PDF — Merge multiple images into one PDF
• 📐 Resize Image — By width, percentage, or exact size

Want to share the result? Upload turns images, photos, or videos into a short link with optional password, expiry, and view limits. Or head back to all 12 tools.