Image Size

allsquare · Mar 13, 2008

I've been using Faststone Batch Image resizer for my website image resizing.

The images have been resized to 100px, 150px and 300px but once resized the file size is still 40 - 100KB which i understand is too big?!?

How can I make the KB of my images smaller without losing the quality - any recommendations?

Calibre Designs · Mar 13, 2008

What format are you doing it in? is have you tried .jpeg .png .bmp?

allsquare · Mar 13, 2008

.jpg only

.png and .bmp are unsupported by my ecommerce providor.

ThomasHardy · Mar 13, 2008

allsquare said:
.jpg only

.png and .bmp are unsupported by my ecommerce providor.

After resizing you could try "save for the web..." In photoshop or a different photo editing program.

allsquare · Mar 13, 2008

I haven't any paid for software such as PhotoShop. I'm happy to pay out, but have got to get it right and it's got to be v.easy to use, as i'm going to be resizing images on a regular basis.

If I was to purchase it, would i be able to use a batch process for "save for the web" ?

I've just resized 3000+ images you see.

ThomasHardy · Mar 13, 2008

allsquare said:
I haven't any paid for software such as PhotoShop. I'm happy to pay out, but have got to get it right and it's got to be v.easy to use, as i'm going to be resizing images on a regular basis.

If I was to purchase it, would i be able to use a batch process for "save for the web" ?

I've just resized 3000+ images you see.

I am not to sure, I have never needed to do anything on such a large scale yet. I am sure there will be free software out there which can do this for you.

I am sure someone on here will know more about it.

awebapart.com · Mar 13, 2008

allsquare said:
The images have been resized to 100px, 150px and 300px but once resized the file size is still 40 - 100KB which i understand is too big?!?

I'm finding it very hard to create a 100x100px jpg that is as big as 40k! Even on full quality settings. A lot depends on the composition of the image as to how much it can be compressed with acceptable quality using jpg. The jpg compression algorithm is better suited for photos, not so well suited for other types of images, and with some images with less colours you might be better off saving them as gifs. Do you have an example of one of your 100px images that is 40K?

The other option is to play around with the jpg settings on your batch conversion software, reduce quality etc, to see if the end result is acceptable, but when you play around always do it from the original high quality images as the source, since if you keep saving the same file as jpg its quality might decrease each time.

dame · Mar 13, 2008

Hey I think I can help you guys here. Get in touch. I can certainly help you with batch processes in photoshop

my email address is damion (at) degrafik.co.uk if you need my help guys

Speak soon.

Damion.
DEGRAFIK

acee · Mar 14, 2008

When I create previews for images on one of my sites the format is 140x80 pixles and file size is between 3 and 5kb. An image of around 400x500px would come out at around 30 - 50kb and a 1200x440 image about 90 - 140kb.

My 'standard' image size for my flash viewer is 780x440 with a target file around 60-90kb.

This is using jpg compression settings of 40 - 60% in Photoshop.

Image content does have a dramatic effect on file size. Landscapes with lots of foilage need a lot of data throwing at the file, whereas a postbox against a clear blue sky would compress really easily.

Apart from increasing artefacts, using greater compression also seems to discard colour information, which can result in flat looking images. I try to boost colour saturation prior to saving as a jpg to offset the colour loss.

When you're selling a product online, I think a good photograph can be very persausive (I'm just too easy to sell to!).

ken_uk · Mar 14, 2008

Search for 'irfanview' in your favourite search engine, it is free, and allows batch resizing.

It has options for setting the quality/compression ration, and sizes (as pixels, percentage etc).

It is a very nice tool.

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ThomasHardy

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