Merge Image

Merge Image is a browser-based tool for combining PNG, JPEG, or WebP files into horizontal, vertical, grid, or stitched compositions. It works locally in the browser, with no account required in the source copy and no stated upload of originals to a server.

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Private browser image composer

Merge Image is a browser-based image composition tool for combining multiple PNG, JPEG, or WebP files into one output. It supports horizontal, vertical, grid, and smart screenshot-stitching layouts, and it is designed to work privately on the device rather than sending originals to a server.

The workflow is built around practical editing tasks: you add images, reorder them, choose the layout and sizing mode, preview the canvas, and then download the finished file locally. The product also states clear limits, including support for up to 30 input files and automatic reduction when a result would exceed its canvas safety boundaries.

Key features

In-browser queue and reordering

Add two or more images, drag them into order, and remove items before generating the final composition.

Multiple composition layouts

Choose horizontal, vertical, grid, or smart stitch layouts depending on whether you need a comparison, contact sheet, or stitched screenshot.

Layout controls

Adjust spacing, alignment, background, and image sizing so the merged result fits the intended presentation without another editor.

Flexible sizing behavior

Keep original size, match width, match height, or fit images into equal grid cells depending on the layout.

Download format selection

Export the completed merge as PNG, JPEG, or WebP, with JPEG quality control shown in the interface.

Screenshot stitching with fallback

Use smart stitch for consecutive screenshots; the tool trims only when the overlap match is confident and falls back conservatively when it is not.

Common use cases

Comparisons and banners
Create side-by-side comparisons for before-and-after images, product views, or design alternatives using the horizontal layout.
Contact sheets and galleries
Build contact sheets or grouped image panels where equal cells and a balanced layout make several assets easier to review.
Documentation and step sequences
Keep screenshots, scans, or step-by-step notes in chronological order with a vertical composition.
Long screenshot stitching
Stitch consecutive scrolling screenshots into a single capture when the images share repeated overlap from the same viewport.
Private file consolidation
Merge receipts, reference images, or separate files from a folder into one downloadable composition without leaving the browser.

Pros and Cons

Pros

Files stay on the device according to the source, which supports a privacy-focused workflow.
Supports several useful layouts, including a dedicated smart stitch mode for consecutive screenshots.
Lets users reorder images, preview the output, and adjust spacing, alignment, background, and sizing before downloading.
Exports to PNG, JPEG, or WebP, which covers common screenshot, document, and photo-sharing needs.
No account creation is described in the source, so the workflow is quick to start.

Cons

The product has explicit limits: up to 30 files, 20 MB per input, and automatic reduction for very large results.
The source does not mention collaboration features, shared workspaces, or integrations with cloud storage or other apps.
Because processing happens in the browser, available device memory still matters for large compositions.

FAQ

Does Merge Image upload my files?

Yes. The product is described as a private browser workspace, and the source says the originals stay on the device rather than being uploaded to the server.

What file types can I import and export?

The source supports PNG, JPEG, and WebP input files, and it can export the finished result as PNG, JPEG, or WebP.

Are there limits on how many or how large the files can be?

You can combine up to 30 image files, with a per-file limit of 20 MB. The product also applies automatic reduction if the final result would exceed the stated canvas limits.

What layouts does the tool support?

The available layouts are Horizontal, Vertical, Grid, and Smart stitch. The tool also includes reordering, spacing, alignment, background, and sizing controls.

Does it integrate with other apps or services?

The source describes browser-based processing with local canvas rendering, but it does not mention a desktop app, mobile app, API, cloud storage integration, or share-link workflow.

Quick Facts

Category: Image composer
Platform: Browser-based web app
Supported inputs: PNG, JPEG, WebP
Supported outputs: PNG, JPEG, WebP
Max inputs: Up to 30 files
Site domain: mergeimage.app

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