How much does the convenience store enlarge the L-size photo prints

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Information as of 2025-09-18

When printing borderless prints at Lawson or FamilyMart convenience stores the photo is slightly enlarged so that it can be printed borderless.

A L版(L size) photo print is of dimensions 127x89mm. Printing at a resolution of 600dpi results in a file 3000x2102 pixels.

Looking at a sample print, I have calculated the enlargement factor as approximately 104%.

Therefore, to produce a corresponding print feature of length A millimeters, the feature in the image file should be (A * 3000/127 / 1.04) pixels

For example, to produce a 50mmx50mm ID photo, the size in the image should be 50 * 3000/127 / 1.04 → 1137mm

Example: 30mmx40mm: 30mm * 3000px / 127mm / 1.04 = 681 ; 40mm * 3000px / 127mm / 1.04 = 909

Happy printing.