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Export settings for DPI-Lightroom

New Here ,
Jan 13, 2025 Jan 13, 2025

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Hi everyone, 

 

Could you please help on adjusting the export settings for the below requirements..

I am not so sure how to set DPI on Lightroom.. Thanks 

1. 72 dpi JPEG files.

2. Longest axis should be no greater than 1440 pixels.

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correct answers 1 Correct answer

Community Expert , Jan 13, 2025 Jan 13, 2025

People often use DPI when they should be using PPI.

PPI stands for Pixels Per Inch, and is used for printing. Pixel dimensions / PPI = Printed dimensions in inches. In other words – the PPI value describes how many image pixels are used to print one inch of paper.

DPI stands for Dots Per Inch, and is the number of ink dots a printer uses to print one inch of paper. It's a property of the printer, not the image.

 

For screen viewing, PPI is irrelevant, it's only used for printing.

So set Long Edg

...

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Community Expert ,
Jan 13, 2025 Jan 13, 2025

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People often use DPI when they should be using PPI.

PPI stands for Pixels Per Inch, and is used for printing. Pixel dimensions / PPI = Printed dimensions in inches. In other words – the PPI value describes how many image pixels are used to print one inch of paper.

DPI stands for Dots Per Inch, and is the number of ink dots a printer uses to print one inch of paper. It's a property of the printer, not the image.

 

For screen viewing, PPI is irrelevant, it's only used for printing.

So set Long Edge to 1440 pixels, and enter 72 in the Resolution field. Unless the image is going to be printed, it doesn't matter what number you enter.

 

image.pngexpand image

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New Here ,
Jan 13, 2025 Jan 13, 2025

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Thanks for the clarification. Appreciate it.

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LEGEND ,
Jan 13, 2025 Jan 13, 2025

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[This post contains formatting and embedded images that don't appear in email. View the post in your Web browser.]

 

@Snickers-+

 

Beware that many software and hardware vendors and print service providers use the terms DPI and PPI interchangeably, while most imaging experts make a distinction between PPI and DPI. That distinction is quite sensible but not as widely observed as the experts would prefer.

 

For example, my Epson Scan utility uses DPI for what the experts call PPI. 

johnrellis_0-1736807467336.pngexpand image

 

Adobe, Apple, and Microsoft documentation is littered with references to DPI, where the experts would use PPI:

https://www.google.com/search?q=dpi+site%3Ahelpx.adobe.com&rlz=1C5CHFA_enUS1064US1064&oq=dpi+site%3A...

https://www.google.com/search?q=dpi+site%3Ahelp.apple.com&rlz=1C5CHFA_enUS1064US1064&oq=dpi+site%3Ah... 

https://www.google.com/search?q=dpi+site%3Asupport.microsoft.com&sca_esv=db7ed66b9cb86445&rlz=1C5CHF... 

 

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