Why JPG at 500KB? WhatsApp Web outgoing photo & IRCTC docs
WhatsApp Web silently re-compresses outgoing photos to roughly 500 KB before delivery — sending a pre-shrunk file avoids the quality loss from double-compression. The IRCTC "upload ID proof" flow for Tatkal bookings and railway concession forms also caps at 500 KB, which is why this target hits a real bottleneck for travel workflows.