Irfan view

  • Thread starter Thread starter El Bandolero
  • Start date Start date
E

El Bandolero

Is there a way to keep (by default) existing jpeg compression factor when
saving a jpeg picture?

Thanks in advance
 
I don't think so.

I know that Faststone Image Viewer can use the
compression factor/quality setting that the original
jpeg image was saved with.
Click to expand...


If you will choose "Save As" instead of "Save" you will get an
additional window titled "JPEG/GIF save options" every time. In this
window you can choose the quality settings which are retained as
default until you change them.

Beware you do not lose the substance by grasping at the shadow.

Shadow
 
El said:
Is there a way to keep (by default) existing jpeg compression factor
when saving a jpeg picture?

Thanks in advance
Click to expand...

Not really. About the best you can do is choose something that gives the
same file size as before. Most JPGs don't have any record of amount of
compression that was used to save them. And even if they do, different
programs use different descriptions of the amount of compression.
Photoshop uses 0 (low quality) to 12 (maximum quality), Paint Shop Pro
uses from 1 (highest quality, lowest compression) to 99 (very high
compression but very poor quality), and Irfanview uses 1 (lowest
quality) to 100 (best quality). There are also number of methods of
chroma sub-sampling, different encoding methods and no standard
quantization tables, so different programs make different decisions on
exactly what to keep and what to throw away.
 
Back
Top