TIF LZW does not work?

[Troken]

I made a search but received 0 post.

I opened saved a TIF in two versions: one uncompressed and one with LZW-compression. Filesizes are now as follows:
Uncompressed: 11356 kb
LZW: 12457 kb

So the compressed is larger than the uncompressed. Any explanation or idea?
(Also tested with a screen capture, it works good, as expected - the compressed is remarkably smaller in filesize.)

[marsh]

I have similar result. Related topic about LZW + predict having the expected sizes.

[Troken]

Hi Marsh, thank you for the link.

I have tried to export the image as a compressed TIF, without success. There is no difference between uncompressed, LZW, ZIP or any other compression. The new tif always ends up with the size 12457.

[marsh]

Hi Marsh, thank you for the link.

I have tried to export the image as a compressed TIF, without success. There is no difference between uncompressed, LZW, ZIP or any other compression. The new tif always ends up with the size 12457.

Export works here with screen capture. There was an old version with export tiff compression bug (don't remember which one).
I'll look and see if it performs better on a 256 color image.

[xnview]

I have tried to export the image as a compressed TIF, without success. There is no difference between uncompressed, LZW, ZIP or any other compression. The new tif always ends up with the size 12457.

Could you post the file?

[Troken]

I have tried to export the image as a compressed TIF, without success. There is no difference between uncompressed, LZW, ZIP or any other compression. The new tif always ends up with the size 12457.

Could you post the file?

I will post it as soon as I find it. Can not find it right now, it was a while ago.