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How do I add a high DPI to a graphic I made?

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  #1  
Old 10-08-2009, 11:39 AM
suzyq4doug suzyq4doug is offline
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Question How do I add a high DPI to a graphic I made?

Hello,
I just found this site.
Hope smarter folks than I are here.
I made some graphics that are saved as png's.
The place that wants them needs them to be
saved with high DPI.
Is there software, preferably free, where I can
do that.
I downloaded the trail of Abobe Illustrator cs4.
Since I didn't create the graphic there, if won't
let me select a high dpi to save it.
Thanks if you can help.
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Old 10-08-2009, 01:01 PM
mjmdigital mjmdigital is offline
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Re: How do I add a high DPI to a graphic I made?

DPI stands for dots per inch. in simple terms it deals with the quality of the final graphic, larger dpi means more detail can be seen and or printed. Low DPI is good for websites, but will look bad printed. here are some links to help you get started.
http://en.wikipedia.org/wiki/Dots_per_inch
http://en.wikipedia.org/wiki/Image_resolution
also here is a free program, that is like photoshop. its the closest thing to a pro program.
http://www.gimp.org/ Hope this helps!
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Old 10-08-2009, 01:04 PM
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abenormal abenormal is offline
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Re: How do I add a high DPI to a graphic I made?

What software did you use to create the graphics in the first place?
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Old 10-08-2009, 01:05 PM
suzyq4doug suzyq4doug is offline
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Talking Re: How do I add a high DPI to a graphic I made?

Thanks you so much.
I will try gimp.
I know the higher number the better the quality.
I made some cute graphics of a
contest, but they need to be saved at a high
DPI.
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Old 10-08-2009, 01:54 PM
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abenormal abenormal is offline
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Re: How do I add a high DPI to a graphic I made?

Quote:
I know the higher number the better the quality.
This is a common misconception. The overall number of pixels is a better indication of "quality" than the concentration of pixels per inch. Simply upsampling a low res image isn't going to increase the quality of the image. A raster image with a lot of pixels to begin with is going to handle upsampling better than a smaller image.
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Old 10-08-2009, 05:11 PM
suzyq4doug suzyq4doug is offline
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Re: How do I add a high DPI to a graphic I made?

So, no matter what I do to the graphic I have already created, I can't make them sharper?
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Old 10-08-2009, 06:42 PM
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MiningArt MiningArt is offline
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Re: How do I add a high DPI to a graphic I made?

Depends what kind of image it is, can you post an example somewhere? You can increase the size of the image and have pixels added by an interpolation algorithm, results will vary. You could use vectorization and then re-size, again depending on what the image is to start with. Your best results will be creating an image that is properly sized to begin with. Design and create your images by pixel dimensions. Example, for a 10x11 inch poster at 200 dpi you would need to create an image 2000x2200 pixels. Then, also, a 10x11 at 300 dpi would be 3000x3300 pixels.

Last edited by MiningArt; 10-08-2009 at 11:51 PM. Reason: edit
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