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JPEG Image Compression problem
Posted: Sat May 28, 2005 6:46 am
by Altaf Raza
Hi
While converting JPEG to PNG i'm facing a problem.On converting
JPEG images of sizes (300 to 900 KB) into PNG the nconvert expands its sizes & resolution(3 to 5 MB) & Converting JPEG of Size(more than 3 MB) nconvert compressed its size (in KB).
Is there any option for JPEG(upto 1 MB of size) should remains its original size(i.e. doesnt expands) after conversion into PNG.
thnx
Re: JPEG Image Compression problem
Posted: Tue May 31, 2005 1:16 pm
by xnview
Altaf Raza wrote:While converting JPEG to PNG i'm facing a problem.On converting
JPEG images of sizes (300 to 900 KB) into PNG the nconvert expands its sizes & resolution(3 to 5 MB) & Converting JPEG of Size(more than 3 MB) nconvert compressed its size (in KB).
Is there any option for JPEG(upto 1 MB of size) should remains its original size(i.e. doesnt expands) after conversion into PNG.
You can try different level of compression, but jpeg is lossy and png lossless
Re: JPEG Image Compression problem
Posted: Tue Nov 08, 2005 9:35 am
by thomas59310
Ok, but How to change compression level with nconvert?
xnview wrote:Altaf Raza wrote:While converting JPEG to PNG i'm facing a problem.On converting
JPEG images of sizes (300 to 900 KB) into PNG the nconvert expands its sizes & resolution(3 to 5 MB) & Converting JPEG of Size(more than 3 MB) nconvert compressed its size (in KB).
Is there any option for JPEG(upto 1 MB of size) should remains its original size(i.e. doesnt expands) after conversion into PNG.
You can try different level of compression, but jpeg is lossy and png lossless
Re: JPEG Image Compression problem
Posted: Wed Nov 09, 2005 7:58 am
by xnview
thomas59310 wrote:Ok, but How to change compression level with nconvert?
-q
Re: JPEG Image Compression problem
Posted: Wed Jul 25, 2007 5:57 pm
by p43k
xnview wrote:thomas59310 wrote:Ok, but How to change compression level with nconvert?
-q
thank you.