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How to change the dpi when saving as a jpeg?
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February 13, 2020, 09:39:38 AM
Hello,
So my company is going to start selling product through DigiKey and they are requesting to provide jpeg images at 640x640px @72dpi. I currently save my images as jpeg 600 x 600px @ 96dpi, I can see where I change the pixels to 640x640 but I do not see an option to change the dpi output????

I did find under "page setup" / "Rendering" - Printing quality for rendered images but that did change anything?

Help please :)

Cheers

Logged
Using Plat Pro 2018
Windows 10 - 64-bit
Nvidia K620
But still slow :(


* February 13, 2020, 11:57:49 AM
#1
My own preference for doing something like that is a two step process.  First save it as a jpeg in TC at a fairly high resolution, something like 2000 x 2000; this ensures that you have a good quality image for the second step.  Second, open the picture in a photo-editing program where you can easily do any required cropping as well as adjusting the overall size in pixels as well as the resolution in dpi.  For many years, I have been using Irfanview for this.  It is easy to use, quite capable and free (donations are optional).

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* February 13, 2020, 02:12:35 PM
#2
I would ask DigiKey if the 72dpi rule is set in stone, as that's only found on ‘old’ computers. I think 96dpi would be acceptable. 300 or 600 dpi would be another matter.

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John R.

V17—V21, 2015—2020
Designer, Deluxe, (Basic, Expert, Professional), Platinum
RedSDK enabled
Windows 10 Pro (1909), 64-bit


February 13, 2020, 04:56:58 PM
#3
The free image viewer IrfanView will make this a trivial task.

Set your resolution as required and save your image(s).

Then, open the image in IrfanView and tap the 'i' key for Information.  As shown in the first image, you can specify the DPI (be sure to hit 'Change' afterwards) and save your updated image.

If you have a group of pictures to convert, put them all in the same folder, double-click on one of them to open and tap the 'b' key for Batch operation.  Click on 'Advanced' to bring up the "Set for all images:" popup and set the DPI (and image size, if you haven't already done that).  Make sure all your desired files are selected and go.


Jeff
« Last Edit: February 14, 2020, 04:24:48 PM by Jeffin90620 »

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TC Pro Platinum 2020, 2019, 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1


February 14, 2020, 02:10:17 PM
#4
Everyone on here is awesome :)

Thank you all for the quick replies, very helpful.

Jeff I'm downloading IrfanView right now :)

Cheers

Logged
Using Plat Pro 2018
Windows 10 - 64-bit
Nvidia K620
But still slow :(