Simple extension to easily maintain aspect ratio while changing dimensions.

Install via the extensions tab on the AUTOMATIC1111 webui.

(note this list is a little out of date, will need to find time to update it)

• JavaScript aspect ratio controls
  • Adds a dropdown of configurable aspect ratios, to which the dimensions will auto-scale
  • When selected, you will only be able to modify the higher dimension
    • The smaller or equivalent dimension will scale accordingly
  • If "Lock/🔒" is selected, the aspect ratio of the current dimensions will be kept
  • If "Image/🖼️" is selected, the aspect ratio of the current image will be kept (img2img only)
  • If you click the "Swap/⇅" button, the current dimensions will swap
    • Configurable aspect ratios will also flip, reducing the need for duplication of config

• Scale to maximum dimension
  • Upon clicking, the width and height will scale according to the configured maximum value
  • Aspect ratio will be retained, the smaller or equivalent dimension will be scaled to match
• Scale to aspect ratio
  • Upon clicking, the current dimensions will be scaled to the given aspect ratio, using the highest width or height
    • i.e 4:3 of 256x512 = 512x384 9:16 of 512x256 = 288x512 1:1 of 256x300 = 300x300
  • You can optionally toggle this to use the "Maximum dimension" slider value
    • i.e 4:3 of 512 = 512x384 9:16 of 512 = 288x512 1:1 of 300 = 300x300
• Scale by percentage
  • Upon clicking, the current dimensions will be multiplied by the given percentage, with aspect ratio maintained
  • i.e -25% of 512x256 = 384x192 +50% of 512x512 = 768x768
    • You can also change the display of these if you find it more intuitive
    • i.e 75% of 512x256 = 384x192 150% of 512x512 = 768x768
    • i.e x0.75 of 512x256 = 384x192 x1.5 of 512x512 = 768x768

• Hide accordion by default (False)
• Expand accordion by default (False)
  • Determines whether the 'Aspect Ratio Helper' accordion expands by default
• UI Component order (MaxDimensionScaler, PredefinedAspectRatioButtons, PredefinedPercentageButtons)
  • Determines the order in which the UI components will render
• Enable JavaScript aspect ratio controls
• JavaScript aspect ratio buttons (1:1, 4:3, 16:9, 9:16, 21:9)
  • i.e 1:1, 4:3, 16:9, 9:16, 21:9 2:3, 1:5, 3:5
• Show maximum dimension button (True)
• Maximum dimension default (1024)
• Show pre-defined aspect ratio buttons (True)
• Use "Maximum dimension" for aspect ratio buttons (False)
• Pre-defined aspect ratio buttons (1:1, 4:3, 16:9, 9:16, 21:9)
  • i.e 1:1, 4:3, 16:9, 9:16, 21:9 2:3, 1:5, 3:5
• Show pre-defined percentage buttons (True)
• Pre-defined percentage buttons (25, 50, 75, 125, 150, 175, 200)
  • i.e 25, 50, 75, 125, 150, 175, 200 50, 125, 300
• Pre-defined percentage display format (Incremental/decremental percentage (-50%, +50%))
  • Incremental/decremental percentage (-50%, +50%)
  • Raw percentage (50%, 150%)
  • Multiplication (x0.5, x1.5)

JavaScript & accordion aspect ratios might not play well together - I don't think many users will use both simultaneously, but we'll see.

• Open an issue for suggestions
• Raise a pull request

Developed using existing AUTOMATIC1111 webui dependencies.

It's recommended to use the python version specified by A1111 webui.

However - for running unit tests, we use pytest.

pip install pytest

From the root of the repository.

pytest