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Next: PC monitor as SLR viewfinder?
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External
Since: Jul 19, 2007
Posts: 1
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(Msg. 1) Posted: Thu Jul 19, 2007 2:00 am
Post subject: What program is best at JPEG compression?
Archived from groups: rec>photo>digital, others (more info?)
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Are some graphics programs better than others for compressing JPEG?
A friend swears that Image Ready is the best for getting the
smallest file with same quality.
But I see a few companies have made utilities purely for
compressing pictures, and claim they obtain better
compression than the top tier graphics programs.
I presume there are different numerical routines used by
different companies in their software, but I would guess
maybe 5% variation in file size at best.
I know there was a comparison done several years ago,
but the website with the pictures seems to be kaput.
(www.imagecompress.com ?)
Is there a recent comparison of different programs to see
who offers the best compression?
That is, best quality for same size, or smallest size
for same quality. |
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External
Since: Apr 16, 2007
Posts: 394
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(Msg. 2) Posted: Thu Jul 19, 2007 5:56 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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u235bomb.RemoveThis@ml1.net wrote:
> Are some graphics programs better than others for compressing JPEG?
> A friend swears that Image Ready is the best for getting the
> smallest file with same quality.
> But I see a few companies have made utilities purely for
> compressing pictures, and claim they obtain better
> compression than the top tier graphics programs.
> I presume there are different numerical routines used by
> different companies in their software, but I would guess
> maybe 5% variation in file size at best.
> I know there was a comparison done several years ago,
> but the website with the pictures seems to be kaput.
> (www.imagecompress.com ?)
> Is there a recent comparison of different programs to see
> who offers the best compression?
> That is, best quality for same size, or smallest size
> for same quality.
>
I have a program called Advanced JPEG Compressor, it gives you far more
control in how the compression is does and allow you to use different
amounts of compression in different areas of the image. It can do a
better job, but takes a fair bit of use to use and the gains are fairly
small. I only use it when posting to the web and where I am really
trying to limit the file size of the photo.
Scott |
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External
Since: Dec 22, 2007
Posts: 9
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(Msg. 3) Posted: Thu Jul 19, 2007 9:57 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<u235bomb.RemoveThis@ml1.net> wrote in message
news:1184835628.283392.315080@i38g2000prf.googlegroups.com...
> Are some graphics programs better than others for compressing JPEG?
> A friend swears that Image Ready is the best for getting the
> smallest file with same quality.
> But I see a few companies have made utilities purely for
> compressing pictures, and claim they obtain better
> compression than the top tier graphics programs.
> I presume there are different numerical routines used by
> different companies in their software, but I would guess
> maybe 5% variation in file size at best.
> I know there was a comparison done several years ago,
> but the website with the pictures seems to be kaput.
> (www.imagecompress.com ?)
> Is there a recent comparison of different programs to see
> who offers the best compression?
> That is, best quality for same size, or smallest size
> for same quality.
>
Jpeg compression is a big subject, since JPEG is a lossy compression scheme,
there are always trade offs. File size vs. amount of compression and
artifacts.
The better Graphic programs give you a choice of the amount of compression
used.
The de facto best Photo editor it Adobe Photoshop. The full version is about
$650 or $150 for the upgrade.
Photoshop Elements is a consumer grade Photo editor that costs much less
money ($100) and does most of what Photoshop CS does.
http://www.adobe.com/products/photoshopelwin/
--
CSM1
http://www.carlmcmillan.com
-- >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Sep 07, 2006
Posts: 291
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(Msg. 4) Posted: Thu Jul 19, 2007 10:01 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital, others (more info?)
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In rec.photo.digital u235bomb RemoveThis @ml1.net wrote:
> Are some graphics programs better than others for compressing JPEG?
GIMP is probably the best because it gives you all the control you need
with a relatively simple user interface.
> A friend swears that Image Ready is the best for getting the
> smallest file with same quality.
I doubt anything from Adobe would be good at JPEG.
Supporting NIH public standards is not their forte.
Photoshop is particularly poor at JPEG rewriting,
because it lacks flexibility.
> But I see a few companies have made utilities purely for
> compressing pictures, and claim they obtain better
> compression than the top tier graphics programs.
Using 4:2:2 chroma subsampling saves a lot of space
without reducing quality.
> I presume there are different numerical routines used by
> different companies in their software, but I would guess
> maybe 5% variation in file size at best.
Much of the variation comes from preview, header comments, EXIF, etc.
> I know there was a comparison done several years ago,
> but the website with the pictures seems to be kaput.
> (www.imagecompress.com ?)
There is a good article about JPEG on the photo.net site:
http://photo.net/learn/jpeg/
> Is there a recent comparison of different programs to see
> who offers the best compression? That is, best quality
> for same size, or smallest size for same quality.
Nowadays the discussion is about old JPEG versus JPEG 2000. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Jul 11, 2007
Posts: 4
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(Msg. 5) Posted: Thu Jul 19, 2007 12:01 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Imported from groups: rec>photo>digital, others (more info?)
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External
Since: Jun 20, 2007
Posts: 62
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(Msg. 6) Posted: Thu Jul 19, 2007 6:26 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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u235bomb.RemoveThis@ml1.net wrote:
> Are some graphics programs better than others for compressing JPEG?
> A friend swears that Image Ready is the best for getting the
> smallest file with same quality.
> But I see a few companies have made utilities purely for
> compressing pictures, and claim they obtain better
> compression than the top tier graphics programs.
> I presume there are different numerical routines used by
> different companies in their software, but I would guess
> maybe 5% variation in file size at best.
> I know there was a comparison done several years ago,
> but the website with the pictures seems to be kaput.
> (www.imagecompress.com ?)
> Is there a recent comparison of different programs to see
> who offers the best compression?
> That is, best quality for same size, or smallest size
> for same quality.
I use one in particular called Adobe PhotoDeluxe that gives options of jpeg
compression such as Baseline(standard), Baseline Optimized and Progressive
and then gives an option to save paths. I guess Jpeg is not a simple file
format.
I also like IrfanView and Xnview among others.
Jon. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Sep 07, 2006
Posts: 291
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(Msg. 7) Posted: Thu Jul 19, 2007 6:26 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital, others (more info?)
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In rec.photo.digital Jonathan <Jonathan RemoveThis @house.not> wrote:
>
> I also like IrfanView and Xnview among others.
I like Irfanview too -- it is a great image and slideshow viewer --
but it does not control chroma subsampling.
Xnview is available for Linux, apparently. Do you prefer it to xv? >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Jul 07, 2007
Posts: 6
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(Msg. 8) Posted: Thu Jul 19, 2007 9:55 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital (more info?)
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Bill Tuthill <ccreekin RemoveThis @yahoo.com> wrote:
>
> I like Irfanview too -- it is a great image and slideshow viewer --
> but it does not control chroma subsampling.
You can turn subsampling off in Irfanview by ticking an option during
saving.
I mainly find that useful when there are important red areas in an image,
because otherwise they come out very poorly in a JPEG.
I would agree with the person who said that Photoshop is amongst the worst
- I find I can always shrink a Photoshop-saved JPEG significantly by
running it through a lossless optimiser (such as Irfanview's) afterwards. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Jun 20, 2007
Posts: 62
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(Msg. 9) Posted: Thu Jul 19, 2007 10:38 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Bill Tuthill wrote:
> In rec.photo.digital Jonathan <Jonathan RemoveThis @house.not> wrote:
>>
>> I also like IrfanView and Xnview among others.
>
> I like Irfanview too -- it is a great image and slideshow viewer --
> but it does not control chroma subsampling.
>
> Xnview is available for Linux, apparently. Do you prefer it to xv?
What is xv? I think I must have missed something somewhere. Like another
poster related. I only use Jpeg for uploading to usenet and I am not that
concerned much beyond that point.
Jon >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Apr 21, 2007
Posts: 35
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(Msg. 10) Posted: Fri Jul 20, 2007 2:55 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital, others (more info?)
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<u235bomb.RemoveThis@ml1.net> wrote in message
news:1184835628.283392.315080@i38g2000prf.googlegroups.com...
> Are some graphics programs better than others for compressing JPEG?
> A friend swears that Image Ready is the best for getting the
> smallest file with same quality.
> But I see a few companies have made utilities purely for
> compressing pictures, and claim they obtain better
> compression than the top tier graphics programs.
> I presume there are different numerical routines used by
> different companies in their software, but I would guess
> maybe 5% variation in file size at best.
> I know there was a comparison done several years ago,
> but the website with the pictures seems to be kaput.
> (www.imagecompress.com ?)
> Is there a recent comparison of different programs to see
> who offers the best compression?
> That is, best quality for same size, or smallest size
> for same quality.
>
I don't know if it's the best, probably not, but the Optimizer in the 'Save
As' options in Paint Shop Pro 9 is really handy for compressing pictures
down to a small size. It allows you a real-time view of a zoomed crop
while the compression factor is changed so that artefacts can be seen. That
way, the max compression for a particular picture is easy to find and it
also predicts the file size, handy for web posting. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Apr 21, 2007
Posts: 35
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(Msg. 11) Posted: Fri Jul 20, 2007 2:56 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"GilfordBrimly" <antispam.DeleteThis@myisp.com> wrote in message
news:9p4v93hv10tab9virqk9at0q1nkb5t3oqj@4ax.com...
> In testing a 6 megapixel 2816x2112 image just now with a lot of detail in
> it
> (foliage and animal fur), the original 3meg file compresses down 416k at
> RealOptimizer's 50% setting with virtually no image degradation nor
> downsizing
> needed.
Thee only problem with this is that jpg artefacts are usually first noticed
as blocking in large areas of slightly varying tone like the sky. Were
there any areas like that in your test photo? >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Jul 20, 2007
Posts: 2
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(Msg. 12) Posted: Fri Jul 20, 2007 11:55 am
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital (more info?)
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On Thu, 19 Jul 2007 22:38:17 -0400, Jonathan wrote:
> What is xv? I think I must have missed something somewhere. Like another
> poster related. I only use Jpeg for uploading to usenet and I am not that
> concerned much beyond that point.
> X-Newsreader: Microsoft Outlook Express 6.00.2900.3028
Jon,
Don't worry your pretty little head about it.  >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Sep 07, 2006
Posts: 291
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(Msg. 13) Posted: Fri Jul 20, 2007 3:39 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Gordon Freeman <GF.DeleteThis@valve.invalid> wrote:
>>
>> I like Irfanview too -- it is a great image and slideshow viewer --
>> but it does not control chroma subsampling.
>
> You can turn subsampling off in Irfanview by ticking an option during
> saving.
Do you mean "Disable color subsampling" option in the JPEG/GIF dialog?
I had not noticed it before, but upon testing, it only switches between
2x2 (default) and 1x1 chroma subsampling. It can't set 4:2:2 like GIMP.
> I would agree with the person who said that Photoshop is amongst the worst
> - I find I can always shrink a Photoshop-saved JPEG significantly by
> running it through a lossless optimiser (such as Irfanview's) afterwards.
And Photoshop's Save For Web produces remarkably lousy quality, allowing
(if I'm not mistaken) quality 99-100 with 2x2 chroma subsampling, which is
just stupid. Anything above about Q 85 should use 1x1 or 4:2:2. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Sep 07, 2006
Posts: 291
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(Msg. 14) Posted: Fri Jul 20, 2007 3:44 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Jonathan <Jonathan DeleteThis @house.not> wrote:
>>
>> Xnview is available for Linux, apparently. Do you prefer it to xv?
>
> What is xv? I think I must have missed something somewhere.
XV is an old Unix/X11 program by Jon Bradley that's much like Irfanview,
though obviously not as modern. For example, xv 3.10 lacks EXIF support.
Irfanview is better in some ways, worse in others. I use xv on Linux
because Irfanview runs only on Windows, and GIMP (like Photoshop) is more
an editor than a viewer.
> Like another poster related. I only use Jpeg for uploading to Usenet
> and I am not that concerned much beyond that point.
In theory that is the best plan, but my friends are often sending me
JPEG files from digital cameras incapable of producing RAW. So I have
learned how to edit JPEG with minimal damage. >> Stay informed about: What program is best at JPEG compression? |
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External
Since: Feb 19, 2006
Posts: 20
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(Msg. 15) Posted: Fri Jul 20, 2007 3:55 pm
Post subject: Re: What program is best at JPEG compression? [Login to view extended thread Info.]
Archived from groups: rec>photo>digital, others (more info?)
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In article <469f89b0$0$20534$4c368faf@roadrunner.com>,
Scott W <biphoto.TakeThisOut@hotmail.com> wrote:
>u235bomb@ml1.net wrote:
>> Are some graphics programs better than others for compressing JPEG?
>> A friend swears that Image Ready is the best for getting the
>> smallest file with same quality.
>> But I see a few companies have made utilities purely for
>> compressing pictures, and claim they obtain better
>> compression than the top tier graphics programs.
>> I presume there are different numerical routines used by
>> different companies in their software, but I would guess
>> maybe 5% variation in file size at best.
>> I know there was a comparison done several years ago,
>> but the website with the pictures seems to be kaput.
>> (www.imagecompress.com ?)
>> Is there a recent comparison of different programs to see
>> who offers the best compression?
>> That is, best quality for same size, or smallest size
>> for same quality.
>>
>I have a program called Advanced JPEG Compressor, it gives you far more
>control in how the compression is does and allow you to use different
>amounts of compression in different areas of the image. It can do a
>better job, but takes a fair bit of use to use and the gains are fairly
>small. I only use it when posting to the web and where I am really
>trying to limit the file size of the photo.
The xat.com Image Optimizer, and JPEG Wizard (Pegasus Systems) are two
similar products that work somewhat differently, and have differing
additional feature sets - but also allow direct visual manipulation of the
trade-off between file size and image quality on a per-area basis within
the image. As you say, mainly for web posting of where size is of absolute
importance (like when we email photos to relatives using dial-up
connections). >> Stay informed about: What program is best at JPEG compression? |
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| Related Topics: | Photoshop - why no JPEG 2000? - Does Photoshop CS2 not support JPEG 2000 because Adobe thinks JPEG 2000 is a dead-end? Or was it too expensive to pay license fees for an encoder that few Photoshop customers want? Either speculation or hard facts welcome... PaintShopPro 9 does support...
What does OPTIMIZATION do for the IrfanView JPEG lossless .. - What does the IrfanView lossless JPEG rotation plugin "optimization" actually do? When I rotate a JPG digital photograph using the IrfanView "Options -> JPEG Lossless Operations" plugin, one of the options is to "Optimize JPG... |
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