1. International CV Photo Conventions (35×45mm vs. 2×2 in)
In Germany, France, Spain, and across most of Asia, standard CVs expect a 35 × 45 mm portrait (which equals 413 × 531 pixels at 300 DPI print resolution). For US online portals and LinkedIn avatars, a 2 × 2 inch (600 × 600 px) square crop is standard. When uploading to strict text-only ATS parsers, always keep a clean text PDF without embedded decorative graphics.