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Image quality
#7
(11-14-2020, 07:27 PM)rich2005 Wrote: ... No idea why your tiff file should shrink so dramatically, does it contain large expanse of solid colour that compresses a lot?  Are the tiffs 16 bit images down to 8 bit in the PDF. Too many unknowns.

edit: Just a thought. A tif file can contain a thumbnail image. That would show opening in Gimp as two pages, make sure you use the correct one (page 2 ?). It should be obvious from the image size shown top of the Gimp window.

Hi Rich thanks for helping out again!

I would like to nail this one down.

I will fill in more details that I have learned.
I would like to understand everything as best as possible.

I'll start by saying where I am and where I'd like to get to.
I have two transparent background files sent to me by my friend that were made in PS.
One is 4.3M and at 900x1200 pix.
The other is 4.5M and at 2700x3600 pix.
For some reason the 4.5M file will not show when I try to view it in my file viewer ( but I can load it into GIMP).

I have edited my friends files and they are good to go in GIMP.
I have made a few transparent background versions:

2700x3600 trans.png   1.7M
900x1200 trans.png    393k
900x1200 trans.pdf     312k   (shows with white background in viewer)
900x1200 trans.tiff       4.3M
2700x3600 trans.tiff   2.1M  (compressed at 9)
2700x3600 trans.tiff   38.8M  (no compression)

I would like to get the best possible resolution file that I can make available for download on a site
so people can use it to print t-shirts and other wares.

I had thought that a .tiff file would be best suited for this.
I also understand that .pdf's are a preferred file type because it's a vector file.

I'm at a loss now as to what direction I should go with?
Strangely, my website refuses to allow .tiffs to be downloaded (all other types allowed).

Any tips you could offer given this info?
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Messages In This Thread
Image quality - by Mark-Gim - 11-13-2020, 11:50 PM
RE: Image quality - by eepjr24 - 11-14-2020, 01:46 AM
RE: Image quality - by Mark-Gim - 11-14-2020, 02:29 AM
RE: Image quality - by rich2005 - 11-14-2020, 10:08 AM
RE: Image quality - by Mark-Gim - 11-14-2020, 05:53 PM
RE: Image quality - by rich2005 - 11-14-2020, 07:27 PM
RE: Image quality - by Mark-Gim - 11-17-2020, 08:38 PM
RE: Image quality - by rich2005 - 11-18-2020, 12:32 PM
RE: Image quality - by Mark-Gim - 11-18-2020, 07:11 PM
RE: Image quality - by Mark-Gim - 11-18-2020, 11:01 PM
RE: Image quality - by rich2005 - 11-19-2020, 01:09 PM
RE: Image quality - by Mark-Gim - 11-20-2020, 04:22 AM

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