Join overlapping scans into one image.

Make your first stitch

1. Try the sample

   Choose Map mosaic under Try a sample set. It loads six overlapping pieces of a fictional map. Click Stitch images to see how it works. You can download the sample images too.

2. Add your own scans

   Click Remove all, then Add images. Choose scans of the same document, with about 30–60% overlap between neighbouring sections. The order of the files does not have to match their position.

3. Choose the scene type

   Select Maps & flat scans for scanned paper or map sections. Use Photographs — perspective mosaic for overlapping camera images with modest changes in viewpoint.

4. Choose the output size

   Start with Balanced matching detail and the 8-megapixel output limit. Leave Blend overlapping edges and Balance exposure selected for the first attempt.

5. Stitch and read the report

   Click Stitch images. Each source must connect to the same scene through an overlap. If matching fails, read the message and check for a missing section or too little shared detail.

6. Inspect the joins

   Choose 100% and look along lines, text and image edges. Watch for doubled letters, bent lines or misplaced sections. A completed stitch still needs a visual check.

7. Export the image

   Click Export stitched image, choose PNG, JPEG or WebP, then Save image. PNG keeps transparent outer edges; JPEG puts them on a white background.

What works best

Use sharp images with similar brightness. Repeated patterns, moving objects, large viewpoint changes and blank areas can cause poor matches. More images do not help if they do not share useful detail.

The web app accepts 2–40 images, up to 16 megapixels each, with a combined source limit of 64 megapixels. Export size is capped by the output limit you choose. Perspective mode is for a visual mosaic, not a 360° panorama. Map results have no geographic coordinates and are not survey measurements.