Poor TIFF compression

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Luca_P
Posts: 2
Joined: Mon Mar 22, 2021 10:47 am

Poor TIFF compression

Post by Luca_P »

Hi,

starting from a 57.1 MB uncompressed TIFF file I obtained:

- LZW+Predict. ("only one strip" selected): 39.9 MB

- ZIP ("only one strip" selected): 53.7 MB

The ZIP compression seems poor since with another program I obtained a 37 MB file.

Xnview version 2.49.5.
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xnview
Author of XnView
Posts: 36431
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: Poor TIFF compression

Post by xnview »

is it possible to have the original file and compressed one?
Pierre.
Luca_P
Posts: 2
Joined: Mon Mar 22, 2021 10:47 am

Re: Poor TIFF compression

Post by Luca_P »

Here you can find an example with a photo reduced to 50% and compressed with Xnview and another software. You can see the difference with ZIP compression, which is almost always the best solution with the other software:

https://www.mediafire.com/folder/2gck1e ... essed+TIFF

However, I notice that the smaller ZIP file is not displayed correctly by the file hosting site, so there may be compatibility problems.
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xnview
Author of XnView
Posts: 36431
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: Poor TIFF compression

Post by xnview »

ok, thanks, i'll check
Pierre.