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setting dpi in TP7

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macsnapper:
can someone tell me:
If I use quick process to set the dpi in a jpg am I rewriting the jpeg with a subsequent quality loss, or am I just changing a tag within the jpg and the quality is lossless?

Daan van Rooijen:
> If I use quick process to set the dpi in a jpg am I rewriting the jpeg with a subsequent quality loss, or am I just changing a tag within the jpg and the quality is lossless?

The file is rewritten but the image data is not affected. So, it's a non-lossy operation.

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