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Study of the effect of multiple writes on jpg files
Mar 10, 2021 12:10:28   #
DirtFarmer Loc: Escaped from the NYC area, back to MA
 
I have added some work to the previous study.
https://www.uglyhedgehog.com/user-page?upnum=3000

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Mar 11, 2021 10:01:19   #
AzPicLady Loc: Behind the camera!
 
I have a question about this issue. I have a website that is a POD. I upload JPEGS for them to display and print. How long does that jpeg stay "good" if it is printed frequently? Does opening it to print from it degrade it?

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Mar 11, 2021 11:36:49   #
Bayou
 
AzPicLady wrote:
...Does opening it to print from it degrade it?


Not at all.

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Mar 11, 2021 15:02:15   #
DirtFarmer Loc: Escaped from the NYC area, back to MA
 
AzPicLady wrote:
I have a question about this issue. I have a website that is a POD. I upload JPEGS for them to display and print. How long does that jpeg stay "good" if it is printed frequently? Does opening it to print from it degrade it?


The changes only happen when you re-write the jpg. Opening and printing does not change anything. When you close the jpg after printing, it’s the same jpg. No problem with multiple prints.

Particularly from a website. Downloading cannot change the files on the website. Someone would need access to the website code for that.

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Mar 11, 2021 15:54:14   #
AzPicLady Loc: Behind the camera!
 
DirtFarmer wrote:
The changes only happen when you re-write the jpg. Opening and printing does not change anything. When you close the jpg after printing, it’s the same jpg. No problem with multiple prints.

Particularly from a website. Downloading cannot change the files on the website. Someone would need access to the website code for that.


Thx.

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