IE6, load times & pngs

true or false: using pngs (specifically png-8's WITHOUT alpha
transparency,
but with gif-style 1-bit transparency) adds load time to a
page versus a
comparable transparent gif of the same file size.
I have been told this is causing some latency and it doesn't
seem correct to
me. Are there any reliable articles out there that can speak
to this? Anyone
just know?
Alex

> true or false: using pngs (specifically png-8's WITHOUT
alpha
> transparency, but with gif-style 1-bit transparency)
adds load time to a
> page versus a comparable transparent gif of the same
file size.
False. Because the PNG file compression algorithm is more
efficient than
the GIF file's simplistic algorithm, an 8-bit PNG image will
always be about
10-15% smaller than the comparable GIF image, and perhaps
more if the image
contains vertical bands or textures. Also, comparing the
render times for
two images, of the identical weight, where one is GIF and the
other is PNG,
would show no difference.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
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"Alexander Ross" <[email protected]> wrote in message
news:firs1e$cju$[email protected]..
> true or false: using pngs (specifically png-8's WITHOUT
alpha
> transparency, but with gif-style 1-bit transparency)
adds load time to a
> page versus a comparable transparent gif of the same
file size.
>
> I have been told this is causing some latency and it
doesn't seem correct
> to me. Are there any reliable articles out there that
can speak to this?
> Anyone just know?
>
> Alex
>

Similar Messages

Windows Compatibility (IE) / Load Time / PNG Files

I host my website on Mobile Me and have had several Windows users look at my site complaining about load time and scrolling issues (up and down the frame is jumpy). I have heard that some older versions of IE cannot work with PNG files very well. I suppose this "may" be the issue. Any thoughts on how to get the web site working more smoothly for those people on Windows using IE? Also, some Firefox users have stated they too have issues when viewing via a Windows a system. Thanks...

Hi!
yeah I initially went through some pains in getting my music to play back under IE as well
www.mafmusic.net
first, post your website
i will then it on my computer (a dual quad core mac pro) and my wife's macbook pro
using both firefox and safari
i also have a pc here (piece of crap) that i can use to test it using ie if you wish
or ask my friends
to test it
i am almost retiring, but have been working from our home for the past few years on a pc
i do database design and data analysis
let me know what you think
about these suggestion
take care and good luck
ps if you like music go to my site and let me know what you like, etc
am open to suggestions

Png's loading time

Hi,
As far as I understand, when an image is being resized and effects applied to it within iWeb, the app turns it into .png files which have the down point of long loading time on the web.
Is there a way to come around this to avoid having visitors run away from my website due to too long loading times?
The fix I thought about consists in resizing and applying effects to images outside iWeb and then drop them on my iWeb pages. In that case, what are your software recommandations?
If anybody has other options, could you please share.
My website can be found under http://yvon.foessel.free.fr/yvonski/Home.html
Thanks for your help.
Vonz.

OK, some new developments.
I have been in touch since a few days with Ton Brand, a very cool Dude, who suggested opening the .png images in Preview and proceed the Save As command to turn them into .jpgs. This dramatically cuts down the image size and it becomes a lot faster to load. The down point of the operation is the Alpha channel of the .png image which is not supported by .jpg but by .jpg-2000. I don't have clue of the fix, maybe somebody has a thread?
Ton's website (http://www.tonbrand.nl/index.htm) offers html optimizers to make your website quicker to load by optimizing the code. If you want more info, check out his wabsite, I'm a newbee in this images and optimizing stuff.
So far for my up to date investigations.
Vonz.

Reducing a SWF file size / creating "instance names" for website loading time improvement

Im hoping someone clever can help...
What i have done so far:
1) Created a flipbook using indesign CS5.5 that contains approx 25
images (embedded PNG's), these need to be good quality as this is a
portfolio - I'd also like to keep the 'page curl' effect. This makes the SWF generated cira 25MB.
2) created a Flash website "wrapper" to hold the above flipbook and add
features such as "bookmarks", links to other sites and forward/backward
page navigation buttions.
The issue we have is that because the flipbook SWF is 25MB the site
load time is slow.
What can be done to speed this up without compromising the image
quality?
1) Is there a way to make the indesign SWF smaller?
2) is there a way in indesign to properly give each page an
"instance name" so that they can be controlled from flash and therefore
I can load each pages image as and when needed.
any other ideas?
(If you'd like to visit the website to view the loading issue http://www.lizblackdesigns.co.uk)
Thanks
Liz

these need to be good quality as this is a portfolio
The approach to your portfolio website seems very outdated and will not help you in the near future. Flash is being used less and less with the increase in Mobile Devices being used to access the internet - a large chunk of which include Apple's iDevices which don't support Flash. This alone is a reason not to do it, however there are a few other big issues with the method you have chosen.
There is no "content" on your website for any search engine to find. No text. No meta data. No image alt tags. No titles. Nothing. In other words, your website will not be found by the people you are trying to attract. I would imagine for a portfolio site, you may want to re-think this approach.
The way the Flash file was created is the worst possible way to add Flash to the web as you have only embedded image files - and this is your entire site?! You could have included some text, which would have been viewable by search engines, and used color shapes to increase quality but lower filesize.
The filesize meant it took me over 1 minute to get off your home page. The average internet user will leave your site if you do not keep them interested after 5 seconds. In other words, you should have content of interest viewable within 5 seconds of load time.
If you are set on keeping the Flash setup for your website, re-build using as much text, color shapes and lines as you can (vector work in other words) and do not rasterize/export as image. This will drastically reduce load time and increase quality. You will also want to divide your file into sections and create more than 1 HTML page so that the browser only loads a bit at a time. You might also want to set a maximum size container for the Flash file as on my browser, it looks extremely pixelated and is very large, but unclear.
I would suggest looking into HTML5 if you are keen to create a website that can be viewed by around 98% of the web surfing people and it will also mean you can use an image slider (or similar) to show good quality images of your work. This will aid your site in being found by search engines but will also allow you to update sections of the site without re-publishing the entire Flash file.
Rik

How can I speed up the load time?

My website is completed and I am happy with everything.
Everything except the time it takes to load. All the images have
been optimized. What can I do to speed up the load time?
http://www.liquidfirefishing.com

On Tue, 6 Jan 2009 01:29:41 +0000 (UTC), "Team Liquid Fire"
<[email protected]> wrote:
>My website is completed and I am happy with everything.
Everything except the
>time it takes to load. All the images have been
optimized. What can I do to
>speed up the load time?
>
http://www.liquidfirefishing.com
Typically, your budget is around 50k for the first page,
total including
all external files. When you add up all the external files
you have used,
like images, Flash, external JavaScript, etc., you have 98
separate HTTP
requests in that page. Just looking at the headers, you have
about 80k in
requests and responses, not even counting the actual files.
Browsers are limited to just a few simultaneous streams, so
most of your
files wind up having to wait until the prior files download.
Included among your 98 requests, you have these six files
that each
individually exceed that total budget:
headerLinked.swf 2,621,578 bytes
2007_fishing_video_web.flv 95,989,898 bytes
2008_aoy_graphic.png 65,582 bytes
jensen_beach.png 59,105 bytes
liquid_fire_logo_new.png 142,277 bytes
DanSchaad.png 379,111 bytes
Your entire total is 99,816,652 bytes. I've put a complete
breakdown here:
http://testing.apptools.com/newsgroup/liquidfire.php
Files are requested from the server in the order they are
encountered in
the source code. They are displayed in the linked page in the
order in
which they are requested. You can see that some of the huge
files are
requested fairly early in the sequence. That means that those
files and
their extended download times are occupying streams and
preventing other
files from being downloaded more quickly.
My suggestion would be to really trim down the content on the
page. Break
it up into several pages. Dump the huge Flash movie at the
top of the
page. Optimize the four .png's above.
Gary

Advice needed on speeding up load times.

I need some practical advice on ways in which I can speed up the load time on one particular page of my website. This page: http://www.thinksmartresumes.com.au/%2499-designs.html
I know there are hundreds of localised factors including Internet connection but lots of people have now commented that this page take over 30 seconds to load. I know it's a big page with lots of png's and links. What can I do to speed things up???
Any advice welcome apart from splitting the page up (that's not an option). I can't read code btw.
Cheers all.

Hi
I tried to check the page which loads slow and can see the reason, while opening the page , browser downloads 10.1 mb of data for that single page out of which 9.7 mb is only for images which you have used on page.
The images as I have checked are png format and defines for states.
The only option you can use is optimize the images you have used, for example if you have used images with opacity or states effect, try to create the image outside of Muse with any editor like Photoshop and then use that image which should lower down the size in comparison to defined states.
Resize the images , use web fonts etc , these things you can check which would help in loading the page faster.
Thanks,
Sanjit

Same image, loaded multiple times: speeding up load time?

I wrote this message before thinking about embedding the
image... I was thinking that putting a relative path automatically
embedded the image, but in retrospect I was wrong, and that will
probably solve my problem. I'll just leave the question here anyway
though:
I'm using image components in my application loaded from a
relative path. The problem is, I have many copies (30+) of the same
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loaded/unloaded at different intervals, and they are not loading
fast enough for me. Would it be more effective to duplicate an
existing "master" Image to improve load time instead of explicitly
setting "image.source=" each time? Is there any better solution for
improving image load speed?
Best of all would be some way to pre-cache or buffer images,
so that I can be guaranteed that they will load as quickly as
possible when I bind them to an Image component.
Cheers!

JPGS are much better for photos. PNGs are good when you need transparency.
Instead of Image Swapping, why don't you use a photo gallery?
FancyBox is nice.. It supports real text captions/descriptions, too.
http://fancybox.net/
Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media Specialists
http://alt-web.com/
http://twitter.com/altweb
http://alt-web.blogspot.com/

Slow image load time in web browsers. My images load too slowly.

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I would do a few tests, I think you might be fine with the High setting, but also try a little lower if you can to conserve load time. It would be good to get your files to around 120kb each.
A .jpeg file is the way to go, as .png files tend to be 20-40% larger.
Here is an image that is set to 730x486- saved as Medium - Quality 50 - jpeg - final size 99 kb

Aspectj5 + load time weaving

im using aspects to decorate UIComponent encode() method at jsf jars.
i need to know how to configure a load time weaving to jsf-api jar using jdeveloper.
any help will be highly appreciated
thank u
abdoly

Well I just timed it:
56 seconds from hitting the reply button until an edit postion..
I append I screenshot I made after 10 seconds:
see attachment
This stays the same while the status bar of Firefox 2.0 says: Connecting with forums.ni.com and waitn for forums.ni.com
Ton
Message Edited by TonP on 01-27-2007 08:49 PM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
LoadTime.PNG ‏45 KB

Jive Forums Load Time

Hi,
We have installed Jive Forums on our NW 7 SPS 14 portal and, for the most part, it is fine. We do have an occasional issue in that the initial load time can be over 40 seconds for the application to appear. Subsequent loads are fine. Sadly, there is no consistency across which server this happens or to which user (often it is less than 3 seconds). This happens in both our clustered production and non-clustered development environments.
Anybody got any pointers as to where to look next?
Neil.

Well I just timed it:
56 seconds from hitting the reply button until an edit postion..
I append I screenshot I made after 10 seconds:
see attachment
This stays the same while the status bar of Firefox 2.0 says: Connecting with forums.ni.com and waitn for forums.ni.com
Ton
Message Edited by TonP on 01-27-2007 08:49 PM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
LoadTime.PNG ‏45 KB

Load Time for executable

Hi,
I've just built an exe from a vi that loads very quickly. It takes about 10s to display the icon in the task bar and then more than 40s to display the front face.
I've disabled everything in my vi so that the only thing made at start up is an apparition of the front face from 100% transparancy to 0%. In the exe i just include my vi.
Do you have an idea to fix this?
Attachments:
diagram.JPG ‏148 KB

Remi
Here are attached the CPU charge of the vi itself and the vi in exe. I've checked the while loop and added some timings which improves a lot the load time of the vi and a little the load time of the exe.
I don't use high resolution images on the front panel.
I'm using Labview 8.5 under windows XP SP3. I don't know exactly the version of the driver installed (I couldn't find).
The application is acquiring data on a RFID system and after some analysis fills a database. In the meantime, a bigger part of the database is read and displayed on the main front panel.
It has been designed by launching 6 times the same acquisition vi (which is composed of 2 loops one generating data and one consumming datas) in order to try to rich real time treatment.
Best regards,
Julien
Attachments:
CPU charge.PNG ‏359 KB

Load time of reply window

The load time of the reply window is rather long, somewhat of 10-15 seconds (either at home or at the office).
With this feature we will never be able to get into the reach of Dennis/Altenbach/Ben
Laura could something be done about this?
Ton
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!

Well I just timed it:
56 seconds from hitting the reply button until an edit postion..
I append I screenshot I made after 10 seconds:
see attachment
This stays the same while the status bar of Firefox 2.0 says: Connecting with forums.ni.com and waitn for forums.ni.com
Ton
Message Edited by TonP on 01-27-2007 08:49 PM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
LoadTime.PNG ‏45 KB

Archives, Page Load Time, Commenting and Trackback

I've been looking through the iWeb forums somewhat, as well as designing a little bit of a website in iWeb (link), and I've found some things to be excited about, and some things that are still unknown. (Here's my original .Mac site, which I will continue to maintain for now).
I really need commenting to work before I can switch to using iWeb as my blogging tool (right now I use Thingamablog, which works pretty well, but is 'unpolished'). I haven't taken too much time to experiment with hand-coding the template files (plus, I haven't found where they might be...), but it looks like the HTML output of iWeb is something I wouldn't want to deal with anyway.
Another feature of the blogging in iWeb that could use a complete overhaul is the archive. I don't think it's at all sensible to put every single entry (if only a title) on one web page; after a month (or a year, in my case), that page would be so long no one would ever think about scrolling through it to see an entry.
And, after reading a few other user's opinions of iWeb, I've found that, yes, it is stupid to have to hand-format every single blog entry (moving text, moving images around, etc.). Very un-intuitive for anyone who blogs more than once a week.
Finally, as other users have posted, the load time for pages is terrible. I thought that iWeb would do a great job at making things look nice using JPEGs and fairly small file sizes, however, I've found that, even if I pre-format a graphic for the right size in Photoshop, the file is converted to a PNG in iWeb, with a ridiculously large file size.
There are a few other problems with iWeb, such as it's inability to allow target="_blank" links for opening new windows, and some other fairly common features of even the simplest blog and website creation tools, and I only hope that these things will be fixed and improved dramatically, or I may never find a use for iWeb.
Now, you may say I am not the user iWeb was intended for... and you are partly right. However, I am looking for a simple tool for a quick picture page or a blog, with little or no hassle, that looks great and doesn't make a huge (in terms of file size) web page. I will have to stick to using Adobe GoLive and Thingamablog for the time being, even for small projects, until some of the above features are added.
P.S. I have also sent this post as feedback to Apple. I suggest you do the same.
[Edit: I've found this thread discussing where templates and such are, but that is no help, since the templates themselves are not very easy to understand...]

Hi Anoop21,
>>Could you please explain the difference between Page Load Time and Page Response Time ?
Based on your issue, I know that the Page Load time is used to count load a page main requests and all dependent requests (images, css, js...) time.
The Page Response Time is count the page main requests time without including the dependent requests time.
So the different is that if the page has the dependent requests.
Hope it help you!
Best Regards,
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Page load time differences between IE and Firefox

Hello all,
I have a problem with page loading time in IE 8. My page contains tabular form, classic report and some other items. I use some javascript code(placed in HTLM Header section) and also dynamic actions. When I try to display the page in IE I have to wait for 40 seconds (100 rows in tabular form). I realized that the performance is dependent on the number of displayed rows in the tabular form. But decrease the number of visible rows, using pagination, is not an option, because all needed rows should be visible for the users. During the tests I have tried to remove all the JS code and disable all the dynamic action, but the loading time was more or less the same.
When I try to run the same page in FireFox then it is displayed in 4 seconds!
I have already try to search some tips or advices how to speed up the page loading, but only what I have found out is, that every web browser is different. The javascript is handled differently, page rendering is done differently and so on.
Maybe there is something what I have missed, and you experts can help me. Is there anything general what I should check or change to speed up the loading time in IE?
Thanks in advance!
Jiri
APEX v. 4.2.1.00.08
IE 8.0.7600.16358
FF 19.0.2

Thanks Denes for your reply.
I use HttpWatch tool to measure the loading times. Reports are mostly the same for IE and FF. I can see from the report, there is three times shown error 404 Not Found for the items below.
http://......./images/sRegion-Body.png
http://......./images/sRegion-Bottom.png
http://......./images/sReportBG-Standard.png
The last action which caused 404 error started 2 seconds after the page was asked to refresh. The next action http://......../i/libraries/jquery-ui/1.8.22/ui/i18n/oracle/jquery.ui.datepicker-cs.js started after 38 seconds (hanging in the same place for 36 seconds). Does it mean that the problem is caused by http://......./images/sReportBG-Standard.png action which returns 404 error?
How can I add the missing images?
-Jiri

Slow loading time on my Website

I just installed iWeb last night, and went about building a practice site. I'm finding that loading times are EXTREMELY slow.
http://www.brianutter.net
I've tried to reduce the size on some of my images by exporting from iPhoto and limiting pixel width, as you can see the site is still super slow. I'm wondering if other folks have experience this and have any helpful tips.
Thanks!
PowerBook G4, 1.5, 1gig Mac OS X (10.4.7)

If you use command-shift-4, everything in that selected area gets lifted. In the case of the red image, you grab the image, it's reflection AND the white background that's showing through the reflection. If you convert this image to a .jpg and place it over a white background, there's effectively very little difference but you realize a great change in file size.
Change the color of the page's background, and you see the difference immediately. The reflection loses it effect. Instead of being reflected over black as it would be if it were a .png, it still carries the white reflection since that's the color you lifted from the screen capture. You'd have to take the original file, reflect it, and command-shift-4 to copy a new image with the correct colored background. It's not just a white box, it's whatever color box your current background is. This is an old web trick used for when you needed the high quality color of .jpg and the transparency of a .gif. You just created all your graphics as .jpg's such that they give the illusion of having degrees of transparency (like with iWeb's reflections and shadows). Here's an image that is an example of this.
http://images.apple.com/ilife/iweb/images/overview20060111.jpg
the page it's from
http://www.apple.com/ilife/iweb/
Drop that image on any background other than white to see what I mean by "white boxes around images"
On your pages, you've composited the entire background as one big .jpg, so it doesn't apply. This one is particularly nice.
http://web.mac.com/jwtseng/iWeb/kate/Images/puttputt.jpg
Make the .jpg match the page background, and it doesn't require a series of .png's!

IE6, load times & pngs

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