Optimized images are bigger than original

[Cretezy]

I'm working on #11, which allows to not resize the image. This is the same as using a large width/height and setting withoutEnlargement.

Config:

  "image-optimizer": {
    enabled: true,
    config: {
      include: ["jpeg", "jpg", "png"],
      formats: ["original", "webp", "avif"],
      sizes: [
        {
          name: "original",
        },
        // Equivalent to
        {
          name: "sm",
          width: 10000,
          withoutEnlargement: true,
        },
      ],
    },
  },

Here is my original image: https://assets.csnades.gg/csnades/FILE_3_2e3706d010.png (210kb)

Here is the "optimized" version: https://assets.csnades.gg/csnades/original_FILE_3_2e3706d010.png (292kb)

Quality is set at 80 (default), however the optimized version is bigger than the original.

Additionally, the webp/avif is the same size:

If I download the optimized versions, they are all AVIF somehow. Seems like a bug.

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Also, I'm not sure if this is related, but any optimized image doesn't work in Firefox (works in Chrome):