TL;DRQuick answer
Arrêtez de deviner les ratios d'aspect. Ce guide couvre les dimensions exactes pour Instagram, TikTok, YouTube et l'impression — ainsi que comment définir les ratios d'aspect dans Midjourney, DALL-E 3, FLUX et Stable Diffusion avec des exemples à copier-coller.
Evidence & editorial standards
- Author: Shahrukh — Creator of PromptSpace, AI researcher & prompt engineer since 2024. 159+ articles published.
- Methodology: Claims are based on hands-on testing with live AI models, publicly available benchmarks, and official model documentation.
- Last reviewed: by our editorial team.
- Corrections: Spotted an error? Email [email protected] — we credit reporters.
- Disclosure: PromptSpace publishes original, non-sponsored content. Tools linked are ones we build or personally use.
