Photo Merge Online

Use a free photo merge tool to combine images horizontally, vertically, in a grid, or as an overlay. 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 images to create one photo merge result.

Presets

Photos

Preparing your image…

Layout

Adjust

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Labels

Export

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Output: —

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

Photo Merge in Seconds

Use this free photo merge tool to combine images right in the browser. Add files, 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.

PhotoMerge.app is built for everyday image tasks that should not require a heavy editor. The photo merge workflow covers side-by-side comparisons, long screenshot stitches, tidy photo grids, and simple overlay blends. The controls stay simple: choose spacing, background, labels, export format, and maximum width before saving the final file.

Photo Merge Layout Options

Four flexible photo merge layouts cover almost every way people want to combine images online. Start with the right layout, then fine-tune the merged image.

Put Photos Side by Side

This photo merge layout creates one horizontal image with equal height, adjustable spacing, and optional Before / After labels. It is useful for progress images and product options.

Stitch Screenshots Vertically

Use vertical photo merge to stack screenshots or images into one long file. Set spacing to zero for a seamless stitch, or add room between guide, receipt, chat, or timeline steps.

Create a Photo Grid

Use a grid photo merge to combine four, six, or nine images into a clean collage. Pick columns and an aspect ratio like 1:1, 4:5, or 16:9.

Overlay and Blend Photos

Create an overlay photo merge from two images. Control opacity, position, scale, and blend modes for watermarks, texture tests, and visual checks.

Best Uses for a Photo Merge

A good photo merge should make the result easier to read, compare, or share without hiding the original images.

Comparisons

Place two images side by side to show a before and after, compare edits, or review product choices. Labels add quick context.

Long screenshots

Use vertical photo merge to combine screenshots from a chat, receipt, article, or app screen. Zero spacing creates a continuous stitch.

Collages and grids

Create a photo grid for travel sets, recipe steps, listings, mood boards, and posts. Fixed columns keep mixed-size images neat.

Overlays

Overlay two images to check alignment, preview a watermark, blend a texture, or compare transparent design work.

Popular Photo Merge Presets

Each photo merge preset sets up the layout, spacing, and labels for a real task in one click — you can still fine-tune everything afterwards.

Before & After

A horizontal comparison 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 on social feeds or product pages.

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 for mood boards, edits, and quick art references.

overlay preset

How to Use Photo Merge Online

The photo merge process takes four quick steps. For simple side-by-side images or screenshot stitches, most people can finish in under ten seconds.

Add photos

Drop files, paste a screenshot, choose from your library, or take a photo on your phone. Add more images later if needed.

Choose a layout

The tool suggests one automatically — horizontal, vertical, grid, or overlay. Presets help with before and after images, ID cards, comparisons, and long screenshots.

Adjust spacing, labels, and size

Tune spacing, background, corners, and labels. Reorder or rotate photos, then set a maximum width for email, forms, or messaging apps.

Download or copy

Export the photo merge result as JPG, PNG, or WebP, or copy it to your clipboard. Use JPG for compact files, PNG for sharp text, and WebP when supported.

Why Use This Photo Merge Tool

Private

During each photo merge, your images are processed locally in your browser. They are never uploaded, stored, or analyzed, which helps keep documents, screenshots, and work images on your device.

Fast

The photo merge preview updates in real time, with no queues and 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 editing easy on iPhone and Android.

High-quality export

Merged images keep the original resolution when possible, with JPG, PNG, and WebP output plus a quality slider. You can also cap the width for smaller shared files.

Frequently Asked Questions

How do I use photo merge online?

Use the photo merge tool to combine images in a horizontal, vertical, grid, or overlay layout, then download the merged image. Everything happens 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 a server, stored, or shared with third parties.

Does the tool add a watermark?

No. Every photo merge export is clean, with 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 use photo merge on iPhone or Android?

Yes. It works in modern mobile browsers. You can choose images from your library and download the photo merge result.

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

In this photo merge tool, these words all mean creating one image from multiple inputs. A horizontal merge places photos next to each other, vertical stitch stacks them, grid creates a collage, and overlay blends images on top of each other.

Will photo merge reduce image quality?

The tool keeps the original pixels when possible and lets you export at the original size. JPG exports include a quality slider, while PNG and WebP are useful when you need crisp text, transparency, or a smaller file.

Can I combine photos without cropping them?

Yes. Use equal height for side-by-side layouts, equal width for vertical layouts, or the Fit option in a grid. The Fill option is available when you prefer matching cells and do not mind cropping edges.

Is PhotoMerge.app good for documents or ID photos?

Yes. The ID Front & Back preset places two images on a clean background, and processing stays in your browser. Always check the final file requirements for the service where you plan to submit the image.