Downscaling
==================================

Downscaling is available in the Modify tab. XL Converter performs downscaling in the following way:

* Aspect ratios are always maintained.
* Resolution can only be reduced, not increased.

Downscaling Methods
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**Resolution**
    Clamps the resolutions to fit in the selected range.

**Percent**
    Scales to the specified percentage of each dimension.

    For example, 50% of 1920 x 1080 will result in 960 x 540. 

**Shortest / Longest Side**
    Makes a particular side fit to the selected resolution.

**Megapixels**
    Scales down to megapixel count. A megapixel is the total pixel count of an image divided by a million.

    Formula: ``(width * height) / 1 000 000``

    Reference (rounded):

    * 0.9 MP - 1280 x 720 (HD)
    * 2.1 MP - 1920 x 1080 (Full HD)
    * 8.3 MP - 3840 x 2160 (4K)
    * 33.2 MP - 7680 x 4320 (8K)

**File Size**
    Scales image to approximated file size in kibibytes.

    It is much slower than other downscaling modes. Its accuracy and reliability varies. Other modes are recommended instead.

Resampling Methods
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.. caution::

    Changing this setting will most likely worsen the quality. Make sure you know what you are doing before tweaking it.

    Default: Lanczos / ImageMagick default

Custom resampling can be enabled in the settings (found in the Advanced category).