| LinkedIn profile photos have explicit minimum dimensions. | LinkedIn Help states 400x400 to 7680x4320 pixels, max 8MB, JPG/PNG. | Technical compliance is necessary for publishing, but not sufficient for trust perception. | LinkedIn Help | Accessed 2026-02-16 · page label: Last updated 1 year ago |
| LinkedIn requires profile photos to reflect the user’s likeness. | The policy lists removals for non-likeness content such as logos, emojis, landscapes, animals, or other people’s likenesses. | Likeness rules are moderation requirements; they do not define one universal “best” pose. | LinkedIn profile photo guidelines | Accessed 2026-02-16 · page label: Last updated 1 year ago |
| Google Business Profile enforces authenticity in business photos. | Guidelines state photos should have no significant alterations or excessive filters and should represent reality. | This policy is specific to Google Business Profile; other platforms may set different moderation thresholds. | Google Business Profile Help | Accessed 2026-02-16 |
| Regulated ID-photo workflows prohibit AI beautification and require frontal capture. | U.S. passport guidance says photos must be recent (last 6 months), directly face the camera without head tilt, and not be altered by software/apps/filters/AI. | This is compliance guidance for passport photos and should not be over-generalized to every corporate portrait use case. | U.S. Department of State | Last updated 2025-12-15 · accessed 2026-02-16 |
| Short camera distance can materially distort perceived facial structure. | A JAMA model reported that at 12 inches, perceived nasal breadth increases by about 30% (male) / 29% (female); at 5 feet, difference is essentially negligible. | The paper models geometric distortion, not downstream outcomes such as callback or conversion rates. | JAMA Facial Plastic Surgery (PMC) | Published 2018-03-01 · accessed 2026-02-16 |
| Self-selection bias can reduce profile-photo effectiveness. | In two internet-based studies (n=610), other-selected images generated more favorable impressions than self-selected images. | This finding supports adding external review, but does not replace final owner approval. | Cognitive Research (PMC) | Published 2017-04-14 · corrected 2021-08-13 · accessed 2026-02-16 |
| Camera setup quality affects error rates and can amplify demographic differentials in automated systems. | NIST notes false negatives are strongly dependent on image quality, and camera misadjustment for very tall/short subjects can induce pitch-angle variation. | Evidence is from biometric evaluation, so this page uses it as risk control guidance for automated scoring. | NIST FRTE demographics | Table last updated 2025-03-05 · accessed 2026-02-16 |