Penguin Edit Blog
Tips, guides, and technical insights on printing perfect photos.
How to Print Passport Photos at Home (Step-by-Step Guide)
Skip the expensive pharmacy lines. Learn the exact, foolproof steps to size, format, and print your own government-compliant passport photos from the comfort of your home.
Exact 2x2 Passport Photo Size Explained (With DPI Math)
Demystifying the strict U.S. 2x2 inch photo requirement. Learn why pixels alone aren't enough and how DPI math ensures embassy acceptance.
How Many Passport Photos Fit on 4x6 or A4?
Stop wasting photo paper. Discover the optimal layout math for fitting the maximum number of standard passport or ID photos onto common paper sizes.
What is 300 DPI? Why It Matters for Photo Printing
A simple, reassuring guide to understanding Dots Per Inch (DPI). Learn why 300 DPI is the golden rule for avoiding blurry or rejected passport photos.
Best Free Passport & ID Photo Layout Tool in 2026
Compare your options for creating ID photos online. See why privacy-first, browser-native mathematical layout engines are the safest choice for 2026.