Hi

 

Most likely this topic has already been discussed many times and I am sorry if it has, but:

 

What is the best format for images that consist of line drawings / simple comic strips / sketch format drawings in monochrome? Is it jpg or png? The advice on the web is a bit confusing. In jpg my images at 550 X 550 pixels are coming out at about 150KB and in png are averaging about 500KB and I only will be displaying one on a page so the file size is not an issue. Just the compatibility with other OS and the current / future conventions. (I don't want to be changing them in 2 or 3 years time.)

 

Regards

gif or 8-bit png (not 24 bit png which sounds like what you are using and it is lossless i.e. you don't save anything in filesize though compression like you do with gif or jpeg)

Hi davep and thanks for replying

 

Yes you are correct I am saving as 25-bit png with file size coming out at 500KB. Experimented with 8-bit png as you suggested and the file size is down to 180KB with no apparent loss of quality. The jpeg was coming out at 150KB. My image software describes the 8-bit png as 'grayscale' but as my images are just monochrome line comic style sketches then that is probably correct anyway. My scanner does not scan to the png format - so it looks like scan to jpg on a large image size (say 2000 X 2000 pixels), then covert to png format and my smaller image size (550 X 550 pixels) in the image software - I will experiment. But definitely png it is going to be. Thanks again.

 

Regards

Sorry I mean't - ...saving as 24-bit...

When you're saving as a png, have you tried reducing the colour pallet to just black and white? Often you get a multitude of greys which bulk out the file but aren't really visible to the eye.

When you're saving as a png, have you tried reducing the colour pallet to just black and white? Often you get a multitude of greys which bulk out the file but aren't really visible to the eye.

 

 

To be honest my graphics software package is not that great, and my graphics knowledge is not much better as I don't have need of the mystic art of design that often. I will see what settings there are on the scanner. I'm happy with the file size of approx 180KB and I'm happy with the quality at that size. I have read some more on the subject and the advice is definitely for png format for line drawings so that is what I am going to go with. Thanks.

 

Regards

see also if your scanner can scan in as tif or bitmap or straight into your graphics app (what is it anyway?)

 

also as well as trying just black and white colour palette you can also try reducing from 256 to 128 or 64 or 32 (or anything ) and see how that goes

see also if your scanner can scan in as tif or bitmap or straight into your graphics app (what is it anyway?)

 

also as well as trying just black and white colour palette you can also try reducing from 256 to 128 or 64 or 32 (or anything ) and see how that goes

 

The scanner was not expensive - a Canon CanoScan Lide 20 or 30 - its Okay and there is a few settings and options I can play around with. I will experiment.

Hi

 

Most likely this topic has already been discussed many times and I am sorry if it has, but:

 

What is the best format for images that consist of line drawings / simple comic strips / sketch format drawings in monochrome? Is it jpg or png? The advice on the web is a bit confusing. In jpg my images at 550 X 550 pixels are coming out at about 150KB and in png are averaging about 500KB and I only will be displaying one on a page so the file size is not an issue. Just the compatibility with other OS and the current / future conventions. (I don't want to be changing them in 2 or 3 years time.)

 

Regards

 

Gifs the way to go, line drawings are allways smaller gifs than jpg's , photographs are better jpg's , am I teaching grandmother how to suck eggs here?

png 8-bit would be smaller in most cases than gif though