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Date: Tue, 23 Dec 2014 00:02:18 +0100
From: Ulf Zibis <Ulf.Zibis@gmx.de>
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Subject: Re: [Tiff] PNG in TIFF ?
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Hi all,

Am 21.12.2014 um 21:20 schrieb Toby Thain:
> On 21/12/14 3:12 PM, Ulf Zibis wrote:
>> Hi,
>>
>> is it possible, to have PNG-compressed images in multi-page TIFF file?
>>
>
> Closest in standard TIFF would be LZW, but G4 is smaller for bitonal images.
>
> You could define a custom compression type, but nobody else would be able to read the file.

It's interesting that you mention bitonal images. In my use case I had 4 PNG images from a 
black&white scan of some document with following sizes:
185 kB
56 kB
74 kB
154 kB
I gained following file sizes with different compression methods composing the 4 images into a 
multi-page TIFF, but never reached the sum off those 4 PNG files which is only 469 kB:
Fax G4:   899 kB
Packbits: 683 kB
LZW:      643 kB
ZIP:      510 kB

Much thanks to all the comments from everybody,

Ulf

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