Reduce file SIZE but keep its DIMENSIONS

nsitedesigns
nsitedesigns used Ask the Experts™
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I thought I read somewhere where you can reduce a high resolution image to 96 dpi for the web and still retain the dimensions of the image.  I use Photoshop and can't figure it out.  Client sent 300 dpi images but when I reduce to 96 the images are too small to use.

Am I losing my mind?
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Commented:
Click on IMAGE - IMAGE SIZE and make your adjustments there before saving. Change the resolution first, then add your desired dimensions.

TK

Author

Commented:
When I change the resolution, it automatically reduces the file dimensions to a size that is way too small.

Commented:
Can't you manually change the dimensions AFTER you type in the resolution? You should be able to. Here is a screenshot of the Photoshop image size window just to make sure we are on the same page. I have Adobe CS3.
imagesize.JPG
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Jose ParrotGraphics Expert

Commented:
If an image has 1 inch x 1 inch and has 300 dpi resolution, then it has 300 x 300 pixels. If you want it in 150 dpi, by maintaining it with 1 inch size then it must be 150 x 150 pixels, thus having a smaller file size and the same printing size.
The approach isn't on inches, but in pixels.
You should first reduce it from 300 x 300 pixels to 150 x 150 pixels, regardless the dpi. If you print such reduced image, it will be half of the original size.
After that, you change the density from 300 dpi to 150 dpi.
Now the image has 150 x 150 pixels and, as the density is 150 pixels per inch, it measures 1 inch x 1 inch.
Jose

Author

Commented:
TK-77 and Jose

Maybe I am not being very clear.  No matter what I am doing it is making photo smaller in size.  If I change pixels first or second it still negatively impacts final image.  Once I  change resolution, from 300 to 96 the image is too tiny to use.  I thought there was some setting on PS that would allow me to bypass this.  Guess not.

Commented:
Reducing the dpi, resolution or compressing the image are ALL going to reduce the quality of the final image. There is no way around that.

Have you tried saving the image as a .jpg and playing with the compression? You should be able to find a middle ground where the image still looks decent at a smaller file size while maintaining the same dimensions. Open the original image in Photoshop and then choose "FILE" - "SAVE FOR WEB & DEVICES" and play around with the quality setting on the right menu bar. Even at the default 90 setting, your image should still look good at a much smaller file size....but it will not look as good as the original image.

Does that help?

TK
- With the image open, click Image > Image Size from the menu bar at the top of the Photoshop window
- Click (Select or tick) the 'Constrail Proportions' Check Box and the 'Resample Image' Check Box at the bottom of the Image Size setting window and choose 'Bicubic Sharper' from the List Box as the method of resampling.
-  Enter the resolution your want '96' in the resolution box in the 'Document Size' section.
- Now you change the Height and Width in the 'Pixel Dimensions' section if you want to specify the size of your final image in pixels OR change the Height and Width in the 'Document Size' section if you want to specify the final size of the image in inches, centimetres etc.
- Remember that the screen resolution of most monitors are generally set between 72 ppi to 96 dpi.
Good Luck!
Oops! Second line of my previous post should read...
- Click (Select or tick) the 'Constrain Proportions' Check Box...
 

Author

Commented:
That was what I was looking for.  Thank you.

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