BetterWaifu Optimal Image Sizes

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By gerogero

Updated: March 11, 2025

The models on the BetterWaifu site are descended from SDXL, which was trained at a base resolution of 1024×1024, but was further fine-tuned on multiple aspect ratios.

All width and height measurements on BetterWaifu must to rounded to a multiple of 8. This is used to guarantee quality of generations.

By using these aspect ratios for your generations, you will get the most optimal results — here are some recommendations. Standard designation usually guarantees a higher quality.

WidthHeightRatio (W:H)FractionStandard
70414080.51:2S
70413440.523809523811:21
76813440.57142857144:7S
76812800.63:5S
83212160.684210526313:19
83211520.722222222213:18
89611520.77777777787:9S
89610880.823529411814:17S
96010880.882352941215:17
96010240.937515:16S
1024102411:1
10249601.06666666716:15
10889601.13333333317:15
10888961.21428571417:14S
11528961.2857142869:7S
11528321.38461538518:13
12168321.46153846219:13
12807681.6666666675:3S
13447681.757:4S
13447041.90909090921:11
140870422:1S
14727042.09090909123:11
15366402.412:5
16006402.55:2S
16645762.88888888926:9
172857633:1S