Author Topic: Thumbnail Compression?  (Read 2727 times)

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Gary

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Thumbnail Compression?
« on: 2014-09-22 17:41:24 »
What is the preference for thumbnail compression?  I have been using JPEG with quality 88.  Has anyone used LZH?  I tested LZH once and it seems to take more space than JPEG/88.  I cannot detect any difference in the performance of thumbnail creation between LZH and JPEG.  Thanks for any input.

Daan van Rooijen

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Thumbnail Compression?
« Reply #1 on: 2014-09-22 20:02:02 »
> What is the preference for thumbnail compression?

JPG.

LZH is mainly still there for legacy reasons. JPG is much more compact. LZH is a zip-like lossless compression format.

For best JPG compression, use multiples of 8 for your thumbnail dimensions (e.g. 120x120).

If you need color-accurate thumbnails, use a JPG quality setting of 94 or higher (but these will take significantly more space than lower settings).
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Gary

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Thumbnail Compression?
« Reply #2 on: 2014-09-22 20:23:29 »
thank you for the great information!  i will adjust the settings i've been using and rebuild the thumbnail database based on your recommendations.  thank you again.