(06-13-2022, 07:18 AM)Stephen Liu Wrote: Hi all
I'm going to scan about 1,000 photos to digital images. On testing I found the size of each digital image is about 2.0MB.
I can compress its size to about half, 1.1MB on GIMP;
File -> Export As -> Select File Type (By Extension)
file type - jpg
-> Export
Export Image as JPEG
Quality --> 85
The final compressed size of the digital image = 1.1MB
Would the compressed image files affect their future use? I won't print them but use them on digital album, digital slideshow, posting on websites etc.
Please advice.
This type of compression, definitively yes, you will never get back information's loss.
JPEG is a lossy format that offers a higher compression rate than PNG in the trade-off for quality ➤ you are trading quality for smaller size with jpg, in other words, smaller a jpg is ➤ less quality from the original it has
(06-13-2022, 07:18 AM)Stephen Liu Wrote: Besides I'll further compress and archive all digital files running "gzip"
Thanks
Regards
This type of compression, no, it's a completely different type of compression https://www.youtube.com/watch?v=Mjab_aZsdxw
I would use 7z to compress instead of gzip, let say it's a personal choice. https://en.wikipedia.org/wiki/7z