By Team Hypomnema · Updated October 19, 2026
Create spot-the-difference puzzles, scrambled tiles and matching cards.
Start with a good source
Add a detailed photo or try the sample.
Design and review
Choose Spot the difference, Scrambled tiles or Matching cards. Set difficulty and layout seed.
Print or export
Download the puzzle and its answer key. Cut cards/tiles along dashed lines.
Privacy and practical limits
Everything is generated on your device; photos, names and designs are not uploaded. No AI model or cloud processing is used. JPG, PNG and WebP: up to 20 MB and 16 MP per photo, 50 MB combined, four photos for a book and one for other tools. Photos are normalized to a 640-pixel working copy; complex textures and low contrast may need different settings. SVG and PNG export the selected sheet; PDF includes every sheet, including separate solutions. PDF artwork is rasterized at approximately 200 dpi on A4. SVG contains vector shapes/text and embedded pixels for photo puzzles; original metadata is not retained. Smaller inputs may be needed on mobile. Cancel stops the active worker; changing controls discards stale results. Spot-the-difference mirrors small textured patches and verifies they contain actual changes. Uniform photos are rejected for this mode. Tiles and matching cards use a center crop to match their rectangular grid. Tile answers map printed tile numbers to positions in the original; matching answers assign pair letters.
Try the workflow
Keep your original documents and review the output. You can also browse all guides or contact Team Hypomnema.