Image Collage Maker

What this tool does

The Image Collage Maker arranges multiple photos or graphics into a tidy grid collage and exports the result as a single PNG. You pick from a set of popular layout presets — a 2×2 square, a 3×3 mosaic, a tall 1×3 strip, a wide 3×1 panorama, and more — then adjust the gap between cells, choose a background colour, and set the output canvas size. Each image is cover-cropped into its cell so there are no letterbox bars. A live preview updates as you change the settings.

Why you might need it

Collages are everywhere in social media. Instagram allows a single post to contain one image, so creators who want to display multiple photos in a grid traditionally have to post separately, losing the grouped effect. A collage condenses several images into one file — perfect for a product flat-lay, a before-and-after comparison, a mood board, an event photo summary, or a team photo grid.

Beyond social media, collages appear in blog posts (hero images that combine multiple product shots), e-commerce listings (showing a garment from several angles in one image), print design (photo books, newsletters, brochures), and event programmes. Combining images client-side means you are not paying for an API call or waiting for a server to process your photos, and you retain full control over the output resolution.

How to use it

1. Drop your photos into the upload zone or click to browse and select multiple files. PNG, JPG, WebP, GIF, and BMP are all accepted.
2. A thumbnail strip appears. Remove any image with the × button, or drag in more images using the second drop zone.
3. Choose a layout from the dropdown. Each preset shows how many images it needs — a 3×3 grid needs 9, a 2×2 needs 4, a strip needs 3.
4. Slide the gap control to adjust the spacing between cells (0 for a seamless grid, up to 48 px for a clearly separated look).
5. Pick a background colour — it shows in the gaps and any area outside the grid.
6. Set the output size with the canvas slider. Larger values give a higher-resolution download.
7. Click Build collage. The preview updates. Click Download PNG to save.

Format and quality notes

The output is always PNG, which gives lossless quality and is universally supported. If file size matters — for example, for a web page where load speed is important — open the downloaded PNG in an image compressor (such as the Image Compressor on this site) to reduce it to a more web-friendly JPEG or WebP without visible quality loss.

Photos shot on a modern phone are often several megabytes each. Processing three or four such photos on a phone may be slower than on a desktop because mobile devices have less memory available to the browser tab. The tool will warn you if a source file is particularly large.

Tips for best results

Collages look most professional when the source images share a consistent style — similar colour temperature, subject matter, or framing. Before uploading, crop your images to roughly the same aspect ratio as the target cell (square for a standard grid, tall for a 1×3 strip) to control which part of each photo is visible after cover-cropping.

Use the white or near-white background for a clean editorial look, and a dark background for a dramatic presentation. A zero-gap setting creates a seamless mosaic, while a larger gap with a contrasting background gives a photo-frame effect. For Instagram, export at 1080×1080 for standard quality or 1440×1440 for the highest quality the platform accepts.

See also the Sprite Sheet Generator if you are building image atlases for web development, or the Image Splitter if you want to do the reverse — cut one image into multiple tiles for an Instagram carousel.