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increase image resolution

Dec 2, 2012, 06:07
Post: #1
Rainbow increase image resolution
Hello fellow Gimp folks--I have used Gimp for a couple years and am in love with it for sure. Am far from an expert on things like image resolution and in dire need of some understanding help. Have creawted a design for business cards and the image looks wonderful on my computer with beautiful solid colors with no bleeding at all. So I went to the website company to have them printed and when the design was uploaded it was that beautiful all blurry look to where nothing was clear. I would appreciate some advice on how to increase it from Low resolution to High--HELP PLEASE
knotnormal
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Dec 2, 2012, 09:51
Post: #2
RE: increase image resolution
Welcome to Gimp Forums.

Ask the printing company or is one of those on-line 'untouched by human hands' deals.

A biz card, typically 3.25 x 2.25 inches @ 300 pixels per inch = 975 x 675 pixels. That is the sort of size your original image should be. From there on forget about sizes in inch/cm

Next is the type of image that you uploaded. Often a pdf is required and parameters can depend if this is straight from Gimp or throught a PDF printer application. A png or tif should be ok.

My opinion, best for this is a vector drawing application such as Inkscape.

But, from your description it could be the printing process, traditionally yellow, magenta, cyan are printed as separate layers so if these are a little out of line you get that blurring. It is usual to add crop & blur marks.

Have a look here https://trade.4over.com/faq.php? lots of useful info on this site. see item 4.
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Dec 4, 2012, 01:34
Post: #3
RE: increase image resolution
Thanks for your reply and just now getting back to work on this issue. Will check my image size in pixels. Thought I had covered all my bases this time but see there is far more for me to learn. Will post progress....Knotnormal

(Dec 2, 2012 09:51)rich2005 Wrote:  Welcome to Gimp Forums.

Ask the printing company or is one of those on-line 'untouched by human hands' deals.

A biz card, typically 3.25 x 2.25 inches @ 300 pixels per inch = 975 x 675 pixels. That is the sort of size your original image should be. From there on forget about sizes in inch/cm

Next is the type of image that you uploaded. Often a pdf is required and parameters can depend if this is straight from Gimp or throught a PDF printer application. A png or tif should be ok.

My opinion, best for this is a vector drawing application such as Inkscape.

But, from your description it could be the printing process, traditionally yellow, magenta, cyan are printed as separate layers so if these are a little out of line you get that blurring. It is usual to add crop & blur marks.

Have a look here https://trade.4over.com/faq.php? lots of useful info on this site. see item 4.
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