Upload two nearly identical photos and the differences are found for you, or upload one photo and get a puzzle with changes added automatically. Then play it here or print it.
Runs entirely in your browser. Nothing is uploaded to any server.
Turn family photos, classroom pictures or pets into a puzzle people care about.
Differences are located for you, so the answer key is always complete.
Solve it on screen with a timer, or print the puzzle and key for later.
In two-photo mode the pictures are scaled to the same size and compared pixel by pixel on a reduced grid, which smooths out noise from compression. Areas that differ by more than the sensitivity threshold are grouped into regions, tiny regions are ignored and overlapping ones merged. For best results take both photos from a tripod or the same position and change a few objects between shots.
In one-photo mode the tool picks spots that do not overlap and changes them: swapping colors, mirroring a section, erasing a detail or adding a small shape. Each change is checked to make sure it is actually visible before it is used.
3 to 5 differences on a busy picture are great for young children.
10 to 12 differences make a real challenge for adults.
Keep lighting the same between shots to avoid false differences.
Lighting, camera movement and compression create small changes. Lower the sensitivity or raise the minimum size.
No. The second photo is scaled to match the first, but they should show the same framing.
No. All processing happens in your browser and nothing leaves your device.
Yes. Download the puzzle PNG and answer key and print them like any image.
Each difference needs its own space. Large photos with plenty of detail allow more non-overlapping changes.
More free tools from My Panda Toolbox.