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200 dpi images

Please let me know how I can ensure that the images that I create are 200dpi.

Thanks!
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dshrenik
Asked:
dshrenik
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4 Solutions
 
avgavgCommented:
Open the images in PS and click Image > Image Sizw in the Menu Bar at the top of the PS window.

Resolution in the Document Size section shows you the resolution in pixels/inch or pixels/cm.

If you change the Resolution, the Document Size will change.

To change the Resolution without changing Document Size, check (tick) the Resample Image and Constrain Proportions check boxes and click OK.

Good Luck!


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dshrenikAuthor Commented:
I don't use PhotoShop. Please let me know if is possible with Paint.
(I shouldn't have added PS as zone, sorry about that)
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avgavgCommented:
Yes you can. Open the image in Paint and click Properties from the drop down menu to see the Resolution in dpi under File Attributes.

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dshrenikAuthor Commented:
It says 96 DPI
Please tell me how I can convert it to 200 DPI
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CianoxCommented:
If you don't want to use cumbersome programs like Photoshop (for a million of comprehensible reasons) i suggest to try one a light alternative more featured and flexible that Ms Paint. A very good choice is Paint.NET, that is free and simple.
You can easily control the image settings and resolutions.

If you just want to open an existing image and change the resolution with a easy and clear GUI you can use IrfanView, that i pretty good for this.
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avgavgCommented:
dshrenik:

Paint displays all images in the 96 dpi resolution of your monitor. Since a 96 dpi image has 9216 pixels (96 x 96) for every square inch, to convert it to a 200 dpi image you have to increase both the height and width by a factor of 2.083 (200/96).
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dshrenikAuthor Commented:
@avgavg:
Please tell me how I can do the same.
Thanks!
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dshrenikAuthor Commented:
I'm a little confused... How can I make sure that my iamge is 200dpi, if paint always displays it as 96dpi regardless of the height and width?
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avgavgCommented:
Open the image, click Resize on the Menu Bar at the top of the paint window and change the Percentage from 100 to 208 and click ok.

Both Horizontal and Vertical will change if Maintain Aspect Ratio is checked.
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dshrenikAuthor Commented:
But, that does not increase the dpi right? Its just that the image looks larger.
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avgavgCommented:
Actually by resizing the image you are increasing the number of pixels it contains. Since standard  monitors have a fixed resolution of around 96 pixels per inch, a 200 dpi image will look more than twice as big as a 96 dpi image viewed on the same monitor.

Actually dpi (dots per inch) is used to refer to print resolution while pixels per inch is used to refer to display resolution.

Though a 96 dpi image may look good on the monitor, 200 to 300 dpi is the minimum resolution required to get acceptable print quality.
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