[Gdal-dev] gtiff file size compared to original tiff +wrld file

[TJMartin]

Hi All

I am just getting started with gdal, and i have done a search but couldnt
find an answer.

I currently have 10,000 tiff files with their world files. My real aim is to
tile them up and make them easier to use in Geoserver or create an image
pyramid.

So i used gdal_translate to Geotiff, then was going to use gdalwarp to
mosaic, then tile them.

However the file size for geotiffs are between 4 and 15 times the size

4mb to 60mb

One set were originally 128mb and now 858mb.

So if i was to mosiac these and then tile them it will still be a huge
data/size volume to server via geoserver.


So my questions

1) Can i reduce the quality when translating to geotiff, and how much will
this affect the image quality when i mosaic and tile

2) Should i mosaic the tiff + world files instead and then tile them with
world files instead of using geotiffs

3) is there  a better way of doing this?

would really appreciate anyone's help

all the best

Tim

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