Photo Collage

Tool Guide

About the Online Multi-Image Merge Collage Tool

The online multi-image merge collage tool supports merging multiple images onto the same image, making it easy to create image collages, and can quickly assemble thumbnails of all images onto a single image.

The long-image stitching tool supports quickly merging multiple images onto one image, quickly creating image collages or thumbnail collages. It is processed entirely locally with extremely fast speed, so there is no need to worry about image leakage.

The images are composited in upload order. The image upload area supports multi-select, but multi-select may not control the image order; if order matters, please select them one by one in sequence or drag them onto the page.

The tool requires setting the width and height of each output image; if the ratio is inconsistent, it will force-stretch to fill. We recommend using uniformly sized images and setting a width/height matching the original ratio for the best effect.

If the image ratios differ, some images may appear stretched in width or height after processing; using images with a consistent ratio avoids this.

How to Use the Multi-Image Merge Tool

1. Upload the images to stitch: click to upload images or drag them directly into the page's upload box.

2. Set options: set the width and height of the stitched images (matching the original ratio is recommended to avoid stretching distortion), spacing, number of images per row, image format, whether to add sequence numbers, and so on.

3. Merge the collage: click the "Merge Images" button, and the system automatically composites the multiple images into one and provides a preview.

4. Save the image: once processing is complete, you can download and save the stitched image in one click.

Collage Tool FAQ

What is image merging?

Image merging is the operation of stitching multiple images into one large image, commonly used for long screenshots, comparison analysis, album covers, poster making, and more. After merging, all images become one unified whole, making them easy to store, view, and share.

What should I pay attention to when merging images?

Image size: merging images of different sizes may result in an uneven layout; you can adjust them to a uniform size or scale proportionally.

Spacing adjustment: set appropriate image spacing to avoid images being too close together and hurting the visual effect.

Image order: if there are strict order requirements, such as a timeline or comic stitching, we recommend sorting manually.

Which formats does the image stitching tool support?

The online long-image stitching tool supports three mainstream formats - JPG, PNG, and WebP - and you can freely choose the output after merging.

How many images can I upload at once?

Multi-image upload is supported; the specific number depends on browser performance, and stitching dozens of images is generally fine.

Can it generate extra-long images?

Yes. It supports vertically stitching multiple images into a long image, which is very suitable for chat records and web-page screenshot organizing.

Can the stitched image have a custom background color?

The default background is white, suitable for most scenarios. If you need a transparent background, you can choose PNG format for export.

Can the stitching order of images be adjusted?

After uploading, they are automatically arranged in the order the files were selected; we recommend organizing the file order before uploading.

Can it stitch horizontally?

Yes. By adjusting the "images per row", you can achieve horizontal collages or multi-row stitching.

Can I add a watermark after stitching?

The current tool mainly provides stitching and sequence-number labeling and does not include a watermark feature. If you need a watermark, you can combine it with other online watermark tools.

Can the merged image be edited again?

The merged result generates a new image directly; if you need to modify it, you need to re-upload and adjust the parameters, then generate again.