Compresores

• https://tinypng.com/
• https://letsenhance.io/

Fotos y videos

• Pexels
• Pixabay
• Unsplash
• Foodiesfeed
• StockSnap
• LifeofPix
• StockVault
• Mixkit - Fotos, videos y música!
• https://generated.photos/

Iconos

• Flaticon
• Fontawesome
• Iconshock - GNU, completamente gratis
• icon-icons