Photo Merge Online

Merge photos side by side, vertically, in a grid, or as an overlay. Free, private, no upload, no signup, no watermark.

Drop photos here

or paste, choose files, or take a photo

Your photos are processed in your browser. Nothing is uploaded.

Add two or more photos to merge them into one image.

Presets

Photos

Preparing your image…

Layout

Adjust

50%
100%
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Labels

Export

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Output: —

Private export. No upload, no account, no watermark.

Merge Photos in Seconds

PhotoMerge.app is a free photo merge online tool that combines your images right in the browser. Add photos, pick a layout, and download the merged image — there is no upload, no signup, and no watermark. Because everything runs locally on your device, it is fast, private, and works even on a slow connection once the page has loaded.

Choose a Photo Merge Layout

Four layouts cover almost every way people want to merge photos or combine images online.

Put Two Photos Side by Side

Merge two photos into one horizontal image with equal height, adjustable spacing, and optional Before / After labels. Perfect for comparisons.

Stitch Screenshots Vertically

Stack screenshots or photos into one long image. Set spacing to zero for a seamless stitch that keeps text sharp and readable.

Create a Photo Grid

Combine four, six, or nine photos into a clean collage. Pick columns and an aspect ratio like 1:1 for social posts or product sheets.

Overlay and Blend Photos

Merge two photos into a single blended image. Control opacity, position, scale, and blend modes like Multiply, Screen, Lighten, and Darken.

Popular Photo Merge Presets

Presets set up the layout, spacing, and labels for a real task in one click — you can still fine-tune everything afterwards.

Before & After

Two photos side by side with equal height and Before / After labels. Great for fitness progress, renovations, and edits.

side-by-side preset

Stitch Screenshots

Vertical layout with zero spacing and equal width — chat threads and tutorials become one clean long screenshot.

vertical preset

Photo Grid

Auto columns and comfortable spacing for a tidy collage that is ready to post.

grid preset

ID Front & Back

Both sides of a card on a clean white background with soft corners — processed entirely on your device, never uploaded.

private ID layout

Product Comparison

Equal cells on a white background with optional Option A / Option B labels for listings and catalogs.

catalog preset

Overlay Blend

Two images blended at 50% opacity — a creative double-exposure style merge in one click.

overlay preset

How to Merge Photos Online

Merging photos takes four quick steps — most people finish in under ten seconds.

Add photos

Drop files, paste a screenshot, choose from your library, or take a photo on your phone.

Choose a layout

PhotoMerge.app suggests one automatically — side by side, vertical, grid, or overlay.

Adjust spacing, labels, and size

Tune spacing, background, corners, and labels. Reorder or rotate photos as needed.

Download or copy

Export the merged photo as JPG, PNG, or WebP, or copy it straight to your clipboard.

Why Use PhotoMerge.app

Private

Your images are merged locally in your browser. They are never uploaded, stored, or analyzed.

Fast

The page loads instantly and previews update in real time — no queues, no processing servers.

No watermark

Exports are clean, full quality, and completely free. No branding is ever added to your image.

Mobile friendly

Big touch targets and a bottom control bar make it easy to merge photos on iPhone and Android.

High-quality export

Merged images keep the original resolution, with JPG, PNG, and WebP output plus a quality slider.

Frequently Asked Questions

How do I merge photos online?

Add your photos, choose a layout such as side by side, vertical, grid, or overlay, then download the merged image. PhotoMerge.app processes everything in your browser, so your photos are not uploaded.

How do I put two photos side by side?

Upload two photos and choose the Side by Side layout. You can make both photos the same height, adjust spacing, add labels, and download the final image as JPG, PNG, or WebP.

Can I stitch screenshots vertically?

Yes. Use the Vertical layout or the Stitch Screenshots preset. It sets spacing to zero and stacks your screenshots into one long image.

Are my photos uploaded?

No. Your photos are processed locally in your browser. They are not uploaded to PhotoMerge.app, stored on a server, or shared with third parties.

Does PhotoMerge.app add a watermark?

No. The exported image has no watermark.

What formats are supported?

You can add JPG, PNG, WebP, and supported browser image formats. You can export the merged image as JPG, PNG, or WebP.

Can I merge photos on iPhone or Android?

Yes. PhotoMerge.app works in modern mobile browsers. You can choose photos from your library and download the merged result.

What is the difference between merge, combine, join, and stitch?

For most users, these words mean creating one image from multiple photos. Side by side merge places photos next to each other, vertical stitch stacks them, grid creates a collage, and overlay blends images on top of each other.