Solved

Image Optimisation

Posted on 2002-05-07
5
144 Views
Last Modified: 2010-04-07
Hi,
One of our clients has asked us to try and reduce file sizes on some of their pages.
One area we are going to aim at doing this is by further reducing the size of the gifs/jpegs used on the site.
We work from PSD's which we cut up where necessary then optimise using the save for web functionality.
In an effort to get the best results we have done a few tests using Fireworks (1.0) and have noticed that it seems to produce better results than Photoshop.  For example a jpeg with quality set at 60 in Photoshop and 60 in Fireworks is dramatically smaller.
I was wondering if this is correct or if what Fireworks refers to as quality 60 Photoshop refers to as quality 40?
Put simply is Fireworks more efficient at image optimisation - it would be great if someone could provide hard evidence as for us to start using Fireworks for image optimisation would add to our development time.
Many Thanks in advance.
0
Comment
Question by:jonnyhough
  • 3
  • 2
5 Comments
 
LVL 30

Expert Comment

by:weed
Comment Utility
1) going by "quality" numbers between different programs doesnt mean a thing. They use different methods so the correlating numbers dont match.
2) Photoshop is probably better at image optimizing but you do need to play with the other options in the Save For Web dialog to get there. Number of colors, compression slider, progressive, etc etc.
0
 
LVL 1

Author Comment

by:jonnyhough
Comment Utility
Hi Weed,
Many thanks for the information.
Do you know if there exists any documentation to back up your points?
I want to be able to explain to my company why I don't think the extra time required to export to fireworks is a worthwhile investment.
Thanks again.
jonny
0
 
LVL 30

Accepted Solution

by:
weed earned 100 total points
Comment Utility
I doubt there are any "compare and contrast" articles on the compression schemes used in each program. Its just common knowlege and what I know from years of experience.

Why exactly does your company want to export to fireworks? They think its better at compressing? Pretty simple to test it. Take the same image and see how small you can get it in each while maintaining a specific level of image integrity. You do need to make sure that youre using each program to its fullest and taking advantage of all its features though.
0
 
LVL 1

Author Comment

by:jonnyhough
Comment Utility
we are basically using all the features i am aware of in photoshop (as you listed above) and i've always been happy with the results.  the problem i have is that from my naked eye i find it hard to compare the quality of photos and any comparison is fairly subjective.  my thinking on the subject is that when it comes down to it both programs have to use the same math/algorithms so i therefore find it hard to believe that one can perform better than the other.
thanks for the information
0
 
LVL 30

Expert Comment

by:weed
Comment Utility
They dont have to use the same methods. Theyre probably close but Adobe likes to play with that kind of stuff to squeeze just a little more out of it. Probably wont make any real difference for you in the long run.
0

Featured Post

Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Suggested Solutions

When deciding to adopt any help desk solutions many factors should be explored before taking decisions. This will change from business to another but in general there are some kind of rule of thumb. Here are some quick tips: Do we need only ticket…
Now that Expression Web 4.0 (http://www.microsoft.com/expression/products/Upgrade.aspx) is free if you buy or have the full version of Expression Web 3.0, now is the best time to  migrate from FrontPage to Expression Web (http://www.frontpage-to-exp…
The purpose of this video is to demonstrate how to make a WordPress Site faster and smaller in size by cleaning up the database. This will be demonstrated using a Windows 8 PC. Plugin WP Optimize will be used. Go to your WordPress login page. T…
The purpose of this video is to demonstrate how to set up an RSS Feed on a WordPress Website. This will be demonstrated using a Windows 8 PC. Feedburner will be used for this demonstration. Go to your WordPress login page. This will look like the…

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now