Qwen Image 2.1 Adds Unneeded Alpha Channel, Bloating Files 15-20%

Users found that Qwen Image 2.1 images carry an unnecessary alpha channel even when transparency isn't needed, inflating file sizes by roughly 15-20%, including after re-saving edited images.

2026-09-24 ~ 2026-09-24 · 2 related posts

• Qwen Image 2.1 secretly adds alpha channels, inflating file size by 15-20% — Calm_Mix_3776 · 2026-09-24
• Qwen Image 2.1 saves unnecessary alpha channels, inflating file size 15-20% — Calm_Mix_3776 · 2026-09-24