Guys, please take away this simple doubt that torments me kkk.
When I export a JPG image without any editing (the way I imported it was exported),
for some reason the exported image doesn't stay with the same size (in bytes) of the imported image.
In fact, the exported image gets even bigger.
The original image is 3.92 MB, 96 DPIAfter exporting with Corel it is 12.3 MB, 96 DPI
As I said before, I did not do any editing on the image to justify such an increase in the size (in Bytes) of the exported file.
Why can't the imported image (the original) and the exported image (which was not edited) have the same quality and size in bytes?
I also made a video demonstration:
https://youtu.be/2bSna_iPMSU
When you import a JPG image (any image) into CorelDRAW, it is no longer a JPG but instead just an uncompressed image with a given number of pixels.The JPG compression that was in the original file is no longer present but the deterioration caused by this compression is now part of the image.When you export as a JPG, DRAW compresses the image again based on your export settings, and the new JPG may be bigger or smaller than the original and it may also look more or less "destroyed" compared to the original image.JPG uses a lossy compression algorithm that will impair the image each time it is opened and saved.
BINGO!
Ronny Axelsson said:JPG uses a lossy compression algorithm that will impair the image each time it is opened and saved.
This is a great thing to point out.
JPG can be useful as a "final destination", but it can be a poor choice of format for editing, saving, editing, saving, etc.
I think I understand.
But, it makes me very confused, Ronny.
Because when you export an image, it is not clear how much you are adding or subtracting quality from the original image.
I set the quality of the exported image, until it is equivalent to the size(in Bytes) of the imported image(the original).
Because keeping the size equivalent (in bytes) of the exported and imported image (the original), is what I understand as a reference of how much Corel is adding or reducing quality in relation to the original image.
In my head it works like this, kkk.
A practical example:
I set the quality of the exported image to 65%, and the size(in Bytes) became equivalent to the size(in Bytes) of the original image.
So I conclude that if you set the exported image quality higher than 65%, you would in fact be applying quality, because from then on, the size of the exported image starts to be bigger (in bytes) than the original.
And if you set the exported image quality lower than 65%, you will not be applying any quality at all, only reducing it, because the exported image starts to become smaller (in bytes) than the original.
Is my reasoning correct?
Another thing, I performed quality tests.
The exported image with 100% quality seems to be even worse.
When exporting, I reduced the quality to 65% and it looked better.
observation:I made the image into a video for youtube, because the forum does not accept my links, and the image is too small here
Reducing the quality, was supposed to get worse right ?Head explodes!