Course thumbnails for Hahow / Udemy / Skillshare — text-led design keeps the title readable even at thumbnail size. Ideogram handles font contrast better than Midjourney.
SAMPLE產出 16:9 課程縮圖、左 60% 文字主導、右 40% 視覺輔助、高對比 mobile 可讀、整體有 professional course 氣質。上架 Hahow / Udemy / Skillshare 直接用。