Jpeg compression

Kalrog · 02-27-2002, 06:48 AM

I read Erik mentioned about Boxtop ProJpeg plugin. It really does produce much smaller jpg files compared to photoshop given the same compression levels. nice plugin.

There is a program called IrfanView. I've been using it for years. It's one of those "must have" programs. It's an image viewer, converter etc. and its free... by all means free... no ads no nothing.

anyway, where I'm going is that I made a comparison between the jpeg file sizes and quality.

I used the same image, reduced size, compression 60

Here is what I got..

First image is Photoshop 6.0 Save for web.

Fire size 46,893 bytes

Kalrog · 02-27-2002, 06:49 AM

follow up..

Second image is Boxtop ProJpeg

File size 23,195 bytes

Kalrog · 02-27-2002, 06:51 AM

follow up..

third image is IrfanView save as jpg

File size 23,372 bytes

kiwi · 02-27-2002, 09:59 AM

Hmmm ya makes ya wonder why Adobe cannot match that compression

Stu.

Bacardi · 02-27-2002, 11:11 AM

I like your approach OZ. Trying things out to verify yourself.

A really difficult test for any jpg are hard edges. JPG is made for photographs, but when you for example fill some selections (no feather ot Anti Alias) with contrasting colours and then try to save as JPG, you will see the "steam" coming out of the edges.

Stu: I'm told that Image readyJPG should be better,...? But since I have BoxtopPro, I always use it. It also has more settings. I could impress you (try to at least) wiyh a lot of technical mumbojumbo like Huffman etc, but I never looked it up myself)

Indigo · 03-02-2002, 12:49 PM

Thanks, Oz! Am downloading Irfanview right now; will play with it later today.

jpfitness · 03-02-2002, 10:37 PM

Hey OZ I just took a look at the program that I use in PS to reduce the size of images.......... Altamira Print Pro (www.atamira-group.com) I think that is their web site
anyway I made it the same as yours
the file size is 45,716 bytes
sfm

Bacardi · 03-02-2002, 11:29 PM

Altamira also made the "Genuine Fractals" didn't they?

jpfitness · 03-03-2002, 01:09 AM

yeah they did Erik
sfm

Rick · 03-03-2002, 01:52 AM

Hey oz good work there in researching. I read what you said and the went to the Infranview site and downloaded it.
Looks like a pretty good program
Thanks for the info

[righton]

Jpeg compression

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Jpeg compression