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Fix saving of non-RGB thumbnails as PNG (#17736)
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changelog.d/17736.bugfix
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changelog.d/17736.bugfix
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Fix saving of PNG thumbnails, when the original image is in the CMYK color space.
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@ -206,7 +206,7 @@ class Thumbnailer:
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def _encode_image(self, output_image: Image.Image, output_type: str) -> BytesIO:
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output_bytes_io = BytesIO()
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fmt = self.FORMATS[output_type]
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if fmt == "JPEG":
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if fmt == "JPEG" or fmt == "PNG" and output_image.mode == "CMYK":
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output_image = output_image.convert("RGB")
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output_image.save(output_bytes_io, fmt, quality=80)
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return output_bytes_io
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