JPG size is much too large, what am i doing wrong??? Such a big bug and no one found it???

TW
Posted By
Tobias_Weigl
Nov 20, 2006
Views
671
Replies
12
Status
Closed
Hi!

I have both Photoshop 6 and Udpate to CS2.

When i save a JPG file in Photoshop CS2, it is always way too large!

Like Quality set to 12 (high), equals about 50 kB, and Quality 6 (medium) preview estimated size is about 30 kB, after i saved it with medium settings, it is sometimes even slightly larger than 50, never smaller!
It seems to completely ignore all my settings.

When i use Photoshop 6, there is no problem, and the estimation is correct, no matter what quality setting i used.

At the moment, this get’s quite exhausting, i do my files in CS2, save them as psd, as JPG, then i have to open the JPG in PS 6 to get the size
down, because CS2 does only the crappy saving as i descriped to you above.

I’m i the only one who experiences this bug???
No matter what quality i set, CS2 seems to always save the JPG in the highest quality setting! I use the update function and have the newest version!

HELP! thank you,
Tobias Weigl,
f-gx design

<http://www.f-gx.de>
Related Tags
big bug large size

MacBook Pro 16” Mockups 🔥

– in 4 materials (clay versions included)

– 12 scenes

– 48 MacBook Pro 16″ mockups

– 6000 x 4500 px

P
Phosphor
Nov 20, 2006
This isn’t a bug.

When you use "Save As…" from the "File" menu, and choose JPEG as your file type, Photoshop saves the main image at the compression rate you choose, but it can also embed an icon, a full size preview, a thumbnail (one each for Mac and Windows), as well as other data.

A better choice for reducing image file size is to use the "Save for Web…" dialogue in the "File" menu. This will strip out all of that extra data which causes the file bloating you’re seeing.

Now, if you decide you still want to simply use the "Save as…" function, you can set which extra bits get embedded in the JPEG by looking at your Photoshop preferences—>File Handling pane.
MV
Mathias_Vejerslev
Nov 20, 2006
It is known that the estimate in Save as JPEG dialog is inaccurate (and as far as I understand, there is no simple way around that) – the algorithm itself is not flawed.
TW
Tobias_Weigl
Nov 21, 2006
Thanks! Phos… is right! Photoshop saves a lot of crap inside the JPEG by default! Although i don’t think this is a very smart feature, however, the new solution with "save for web" is quite attractive.

Thanks for the hint! Great job "Adobe" … *lol*
DM
Don_McCahill
Nov 21, 2006
Photoshop saves a lot of crap inside the JPEG by default! Although i don’t think this is a very smart feature,

Perhaps it isn’t a smart feature to you, but to those people who need that "crap" it is necessary. Adobe does offer a compact jpeg format for you through SFW … don’t disparage the other users who need the full features of the format.
TW
Tobias_Weigl
Nov 21, 2006
I see just dozens of wrong saved JPGs that crank up the internet traffic in a useless way. I don’t disparage anyone, i critisize Adobe for implementing it in such a sloppy way.

In my opinion, it clearly IS a bug, because CS2 estimates the filesize 30 kB and when i save it, it is 50. That is an unacceptable behaviour of the software!

regards,
xx
Y
YrbkMgr
Nov 21, 2006
see just dozens of wrong saved JPGs that crank up the internet traffic in a useless way. I don’t disparage anyone, i critisize Adobe for implementing it in such a sloppy way.

The soundest reasoning leads to the wrongest conclusions when the premises are false.

JPG is not solely for web. It is used for many, many things. As a web-destined image, Save For Web is the cleanest, but not always the best, depending on what you’re doing.

Therefore, it is NOT implemented in a sloppy way, it is implemented in an exceptionally flexible way. Photoshop is a professional image editing program; how lax would Adobe be if they didn’t allow you to save the color profile, or exif data in an image? It is your understanding of JPG use that needs a bit of broadening.

This notion of "unaccptable" seems a little extreme.
JJ
John Joslin
Nov 21, 2006
If you use a professional tool (Photoshop) you are expected to use it in a professional way, not as a dilettante.
MS
michael_shaffer
Nov 21, 2006
In my opinion, it clearly IS a bug, because CS2 estimates the filesize 30 kB and when i save it, it is 50. That is an unacceptable behaviour of the software!

What is unacceptable is always relative to something else that is acceptable. Perhaps you’d care to point out an acceptable JPEG method/software that also provides for all the options PS has provided(?)

cheerios 🙂
TW
Tobias_Weigl
Nov 21, 2006
YrbkMgr:
Yes you are right, JPG is not solely for web purposes.
Nevertheless, Adobe cannot integrate a filesize preview function that fails so bad, and you give me the answer, it doesn’t matter because there is a lot of stuff inside the JPG that is useful for some exotic reasons.

JPG IS for the largest part a small, high compressed picture type, so there is for MOST purposes no logical reason to add things like thumbnails or whatever.

However actually this is not important. CS2 should not estimate a value, and the real value differs by 20 or 40%. This is just irritating!

Mr. Joslin:
Save your offending comments, they are not welcome here.
B
Bernie
Nov 21, 2006
JPG IS for the largest part a small, high compressed picture type, so there is for MOST purposes no logical reason to add things like thumbnails or whatever.

Perhaps not for a thumbnails, but Copyright info, colour profile and other metadata is crucial for MANY purposes

How are you evaluating the size of the file?

Are you taking alocation blocks into account?
JJ
John Joslin
Nov 21, 2006
No offence meant — just an observation.
P
PECourtejoie
Nov 23, 2006
"However actually this is not important. CS2 should not estimate a value, and the real value differs by 20 or 40%. This is just irritating!"

So you prefer no info at all compared to an approximation, even though you are not using the proper tool to do what you want?

Master Retouching Hair

Learn how to rescue details, remove flyaways, add volume, and enhance the definition of hair in any photo. We break down every tool and technique in Photoshop to get picture-perfect hair, every time.

Related Discussion Topics

Nice and short text about related topics in discussion sections