Paper Lantern Designer
Design an A4 lantern with photo or shape windows, fold lines and an assembly guide.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
How to use Paper Lantern Designer
- Choose decorative shapes or add a photo for silhouette windows. Enter a printed title.
- Inspect the cut-and-fold template and assembly guide. Adjust threshold and bridges for a photo.
- Download the A4 PDF, print at Actual size and verify the 50 mm calibration line before cutting.
What are the limits of Paper Lantern Designer?
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. The template has four 38 mm panels and a side glue tab, with a 115 mm overall height. Print on A4 at 100%, not Fit to page. Names are printed headings, not cut-out lettering. Solid lines are cuts and dashed lines are folds. Inspect photo windows before cutting. Use a battery LED only, with the top open; this is not a candle-flame enclosure.