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Seedream 5.0 Pro is here — ByteDance's most powerful image editing model, now on Fullmira.

Try it free
Free · Nothing uploads · No watermark

Merge images online —
combine photos into one

Combine two images into one, or stitch a dozen together side by side or stacked. Drag to reorder, set the spacing, and download — all in your browser.

No watermarkNothing uploadedAll image formats

Drop two or more photos to combine

Add as many images as you like — they'll join side by side or stacked. Everything runs in your browser, so nothing is uploaded and nothing is stored.

JPGPNGWebPAVIFHEICGIFBMPTIFFSVG
100% private — your photos never leave your device
See it in action

Combine photos in under 20 seconds

No account, no upload, no waiting. Here's the whole flow start to finish.

Drop → pick a layout → download. 0:20 · no sound needed
How to use it

Three steps, explained

Everything you need to combine images online — nothing you don't.

1Add

Drop two photos — or a dozen

Drag your images anywhere onto the drop zone, or click to browse. They open instantly because nothing is uploaded: each file is read straight into a canvas on your own machine.

  • No cap on how many images you merge
  • JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, TIFF, SVG
  • Different sizes are matched automatically
Drop two or more photos to combine
or click to browse · nothing uploads
Add as many photos as you like — they join in the order you drop them.
2Arrange

Side by side, stacked, or a grid

Pick horizontal to place photos side by side — best for before-and-after comparisons. Pick vertical to stack them top to bottom, which is what you want for stitching long screenshots. Drag the thumbnails to change the order.

  • Three layouts, switched with one tap
  • Drag thumbnails to reorder instantly
  • Preview updates live as you change anything
Stacked for long screenshots, side by side for comparisons.
3Polish & export

Add spacing, then download

Slide in a gap between photos, round the corners, and set a background colour — or keep it transparent. Then download as PNG, JPG or WebP. No watermark, no signup, no limits.

  • Spacing and corner radius sliders
  • Transparent or any custom background colour
  • Full resolution — merging never softens your photos
Layout
Side
Stack
Grid
Spacing
Background
Download
Spacing, radius and background — the details competitors skip.
Quick version

How to merge images into one

1

Add your photos

Drop in two or more images. They load instantly and stay on your device — no upload, no queue, no account.

2

Choose a layout

Side by side, stacked, or grid. Drag thumbnails to reorder, and the preview updates the moment you change anything.

3

Download

Set spacing and background if you want them, then save your combined image as PNG, JPG or WebP.

Why this merger

Built for the joins you actually need

Combine two images into one

The classic before-and-after. Drop both, pick side by side, and you've got a single shareable file in seconds — no design app needed.

Combine multiple images into one

Two, ten, or twenty — merge multiple images online in one pass, and drag the thumbnails to get the order exactly right.

Stitch images into a long screenshot

Vertical mode joins screenshots top to bottom into one tall image — the tidy way to share a whole chat thread or a step-by-step guide.

Nothing gets uploaded

The merger runs on a canvas inside your browser. Your photos never touch a server — which is also why it's instant.

Spacing, corners & background

Most mergers glue photos edge to edge and call it done. Add a gap, round the corners, or drop in a background colour — or keep it transparent.

Full quality, matched sizes

Different dimensions are scaled to line up cleanly, and everything is drawn at full resolution. Export PNG and it's completely lossless.

Horizontal or vertical — which should you pick?

It's the only real decision this tool asks you to make, and it comes down to what the reader needs to do with the result.

Side by side

Puts photos next to each other so the eye can compare them directly. Use it for before-and-after shots, two product options, or a pair of design variants. Heights are matched automatically so the join looks deliberate.

Stacked

Joins photos top to bottom into one tall image. This is the one for stitching screenshots — a long chat, a full webpage, a sequence of steps. Widths are matched so the seam disappears.

What people combine images for

  • Before and after. A renovation, an edit, a haircut. Two photos in one frame tell the story that two separate files never quite do.
  • Long screenshots. Stitching a conversation or a whole page into one tall image beats making someone scroll through six attachments.
  • Product shots. Several angles in a single image, so a listing or a message shows everything at a glance.
  • Upload limits. When a form only accepts one file, merging photos online is the quickest way around it.

A note on quality

Merging doesn't degrade anything — your photos are drawn into the new canvas at their original resolution, pixel for pixel. The only thing to watch is the export format: PNG keeps it lossless and supports transparency, JPG re-encodes on save but produces the smallest file for photographs, and WebP lands neatly between the two.

FAQ

Questions, answered

How do I merge images into one?
Add two or more photos at the top of this page, pick side by side or stacked, then hit download. It takes a few seconds, there's no account to make, and nothing gets uploaded — the merge happens right in your browser.
Can I combine more than two images?
Yes — there's no limit. Add as many as you like and merge multiple images into one file in a single pass. Drag the thumbnails in the panel to change the order before you export.
What happens if my images are different sizes?
They're scaled to line up automatically — matched by height when you merge side by side, or by width when you stack them. Nothing is cropped and nothing is stretched, so the aspect ratio of each photo is preserved.
What's the difference between horizontal and vertical merge?
Horizontal places images next to each other, which is what you want for before-and-after comparisons. Vertical stacks them top to bottom — the right pick for stitching long screenshots or a set of steps into one tall image.
Are my images uploaded to a server?
No. Everything runs on a canvas inside your browser, so your photos never leave your device. You can disconnect from the internet after this page loads and the merger still works.
Is it free, with no signup or watermark?
All three. It's free, there's no account to create, no watermark is added, and there's no cap on how many images you combine.
What image formats can I merge?
Anything your browser can open: JPG/JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF, SVG, and HEIC/HEIF from an iPhone. You can mix formats freely in one merge, and export the result as PNG, JPG or WebP.
Will merging reduce image quality?
No. Your photos are drawn into the merged file at full resolution — nothing is downscaled or re-sampled. Export as PNG if you want it completely lossless; JPG re-encodes on save, which costs a tiny amount of fidelity but gives you a much smaller file.