Guest Ragab Posted July 28, 2008 Posted July 28, 2008 Is there a compression program that can compress files to a very small size? I mean I need a program that can make a 100MB file --> 50MB or less if possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. Thanks for help -- Ragab
Guest R. McCarty Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Part of the issue is not the compression app, but the source file. Not all files can be significantly reduced in size. Some formats such as Jpg do not have much in the way of compressible data. "Ragab" <Ragab@discussions.microsoft.com> wrote in message news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... > Is there a compression program that can compress files to a very small > size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > effective. > Thanks for help > -- > Ragab
Guest Paul Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Ragab wrote: > Is there a compression program that can compress files to a very small size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. > Thanks for help http://en.wikipedia.org/wiki/Lossless_data_compression "Limitations Lossless data compression algorithms cannot guarantee compression for all input data sets. In other words, for any (lossless) data compression algorithm, there will be an input data set that does not get smaller when processed by the algorithm." At least some file formats, already use compression internally, making it difficult for a compression program to "squeeze" out any more bytes of data. Paul
Guest Ragab Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Thanks for ur response I need it to compress data files, like PDF and DOC files. Is there a software can help? -- Ragab "R. McCarty" wrote: > Part of the issue is not the compression app, but the source file. Not > all files can be significantly reduced in size. Some formats such as Jpg > do not have much in the way of compressible data. > > "Ragab" <Ragab@discussions.microsoft.com> wrote in message > news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... > > Is there a compression program that can compress files to a very small > > size? > > I mean I need a program that can make a 100MB file --> 50MB or less if > > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > > effective. > > Thanks for help > > -- > > Ragab > > >
Guest Ragab Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Thanks for ur response I need it to compress data files, like PDF and DOC files. Is there a software can help? -- Ragab "Paul" wrote: > Ragab wrote: > > Is there a compression program that can compress files to a very small size? > > I mean I need a program that can make a 100MB file --> 50MB or less if > > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. > > Thanks for help > > http://en.wikipedia.org/wiki/Lossless_data_compression > > "Limitations > > Lossless data compression algorithms cannot guarantee compression for all > input data sets. In other words, for any (lossless) data compression algorithm, > there will be an input data set that does not get smaller when processed by > the algorithm." > > At least some file formats, already use compression internally, making > it difficult for a compression program to "squeeze" out any more > bytes of data. > > Paul >
Guest R. McCarty Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Sorry, I'm not personally familiar with any compressors designed for Pdf/Doc files. A web search turns up lots of hits for compressing those file types - but nothing I recognized or would blindly recommend. "Ragab" <Ragab@discussions.microsoft.com> wrote in message news:6DC57112-F1D9-4723-BC44-23A3E4D0FFAF@microsoft.com... > Thanks for ur response > I need it to compress data files, like PDF and DOC files. Is there a > software can help? > -- > Ragab > > > "R. McCarty" wrote: > >> Part of the issue is not the compression app, but the source file. Not >> all files can be significantly reduced in size. Some formats such as Jpg >> do not have much in the way of compressible data. >> >> "Ragab" <Ragab@discussions.microsoft.com> wrote in message >> news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... >> > Is there a compression program that can compress files to a very small >> > size? >> > I mean I need a program that can make a 100MB file --> 50MB or less if >> > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not >> > effective. >> > Thanks for help >> > -- >> > Ragab >> >> >>
Guest Paul Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Ragab wrote: > Thanks for ur response > I need it to compress data files, like PDF and DOC files. Is there a > software can help? The only way to find out, is to test some new softwares. PDF files vary in compressibility. Some files can be compressed slightly, and some not at all. I would not expect a 2:1 compression, but some smaller percentage improvement in size. (The author of the PDF document, can make a big difference to the compressibility. Specifically, in the settings used in Distiller, for image compression.) I'm not sure about DOC files. You would have to examine them, with hex or text editors, and look for redundant information in the file, to estimate whether it is compressible. Ordinary text files, on the other hand, should give good compression. Paul
Guest Ken Blake, MVP Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program On Mon, 28 Jul 2008 06:20:01 -0700, Ragab <Ragab@discussions.microsoft.com> wrote: > Is there a compression program that can compress files to a very small size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. > Thanks for help How much a file *can* be compressed depends on what type of file it is, as well as what data it contains. As a single simplistic example, if there were a text file that consisted of nothing but the latter "x" repeated 100 million times, it could easily be compressed to 15 bytes, containing the characters "100 million x's". In practice, of course, it's never that simple. Most files can't be compressed anywhere near that much, and turning a 100MB file into 50MB or less is almost never possible. But bear in mind that it's primarily the file itself that determines how much it can be compressed, not so much the program that's doing the compressing. The programs you've tried do a good job of compressing. If they can't do what you want (or at least very close to it), it can't be done. You might find a program that did a *slightly* better job, but that's all. -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup
Guest HeyBub Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Ragab wrote: > Is there a compression program that can compress files to a very > small size? I mean I need a program that can make a 100MB file --> > 50MB or less if possible. I tried WinRar, WinZip, and KGB Archiver. > But they r not effective. Thanks for help Compression is more dependent on the source document than on standard compression programs. It is possible for a file to GROW as a result of compression! (Experiment: Compress a file with RAR then apply ZIP to the result. The ZIP file will be larger than the RAR file!). PDFs compress fairly well; DOC files even more so. I doubt that either will reach 50% very often. You may have to investigate other techniques: Spanning the output file to several media or just moving the changes to the file.
Guest Twayne Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program > Thanks for ur response > I need it to compress data files, like PDF and DOC files. Is there a > software can help? > >> Part of the issue is not the compression app, but the source file. >> Not all files can be significantly reduced in size. Some formats >> such as Jpg do not have much in the way of compressible data. >> >> "Ragab" <Ragab@discussions.microsoft.com> wrote in message >> news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... >>> Is there a compression program that can compress files to a very >>> small size? It's not the program that determines how much a file can be compressed; it's the file itself. Especially if it's an already compressed format. >>> I mean I need a program that can make a 100MB file --> 50MB or less >>> if possible. I tried WinRar, WinZip, and KGB Archiver. But they r >>> not effective. >>> Thanks for help >>> -- >>> Ragab If you've tried Winzip and a couple other name brands, those give you the best you're going to get. You can set the compression to max, etc., in those, but ... beware ... other unzip programs may not be able to unzip them since, like Winzip, has a proprietary compression algo that's not supported by all the others. An already compressed file can not be compressed further by more than a few more bytes; it's not worth trying even. HTH
Guest Hula Baloo Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program Ragab wrote: > Is there a compression program that can compress files to a very small size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. > Thanks for help You have rec'd numerous replies explaning why you're seeing the results you've seen. However, since you posted this question in one of the XP forums, I assume you're running XP. Are you aware that XP has a BUILT-IN compression program? Just right-click the file you want to compress, point to SEND TO, and click COMPRESSED FOLDER. That will create a .ZIP file, compressed as well as the other programs you mentioned. Best of all it's a FREE part of Windows XP.
Guest Patrick Keenan Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program "Ragab" <Ragab@discussions.microsoft.com> wrote in message news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... > Is there a compression program that can compress files to a very small > size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > effective. > Thanks for help > -- > Ragab If you find those apps to be "not very effective", even at the maximum settings, you're not going to get where you want because your original file can't be compressed to the point you want. As everyone points out, compression utilities are only part of the equation. The key is the kind of data in the document and the document format. HTH -pk
Guest Patrick Keenan Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program "Ragab" <Ragab@discussions.microsoft.com> wrote in message news:6DC57112-F1D9-4723-BC44-23A3E4D0FFAF@microsoft.com... > Thanks for ur response > I need it to compress data files, like PDF and DOC files. Is there a > software can help? Yes, and you've already tried them and found them inadequate. That means that the problem is not with compression software, it means that you've just reached the limit of compression for your particular files. If you need them to be smaller, go back and look at those files and see if you can edit them to reduce their size or density, or, split them in two. HTH -pk > -- > Ragab > > > "R. McCarty" wrote: > >> Part of the issue is not the compression app, but the source file. Not >> all files can be significantly reduced in size. Some formats such as Jpg >> do not have much in the way of compressible data. >> >> "Ragab" <Ragab@discussions.microsoft.com> wrote in message >> news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... >> > Is there a compression program that can compress files to a very small >> > size? >> > I mean I need a program that can make a 100MB file --> 50MB or less if >> > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not >> > effective. >> > Thanks for help >> > -- >> > Ragab >> >> >>
Guest Ragab Posted July 28, 2008 Posted July 28, 2008 RE: Request: A compression program Thanks for all responses Thanks for caring -- Ragab "Ragab" wrote: > Is there a compression program that can compress files to a very small size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. > Thanks for help > -- > Ragab
Guest Phisherman Posted July 28, 2008 Posted July 28, 2008 Re: Request: A compression program On Mon, 28 Jul 2008 06:20:01 -0700, Ragab <Ragab@discussions.microsoft.com> wrote: >Is there a compression program that can compress files to a very small size? >I mean I need a program that can make a 100MB file --> 50MB or less if >possible. I tried WinRar, WinZip, and KGB Archiver. But they r not effective. >Thanks for help WinZip is pretty good. What kind of file are you trying to compress? Perhaps you are trying to compress a file that is already compressed?
Guest M.I.5¾ Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program "Ragab" <Ragab@discussions.microsoft.com> wrote in message news:A34CC3B5-257F-4290-BBC7-3500B36CAE80@microsoft.com... > Is there a compression program that can compress files to a very small > size? > I mean I need a program that can make a 100MB file --> 50MB or less if > possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > effective. > Thanks for help > You can use the best compression utility money can buy, but it won't significantly commpress a file that is not inherantly compressable in the first place. You don't say what you are trying to compress, but basically, raw video files are generally the most compressible types of file with some algorithms achieving almost unbelievable reduction ratios. Text is inherantly very compressible. Most picture formats are hardly compressable at all, mainly because the format already includes a compression algorithm.
Guest M.I.5¾ Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... > On Mon, 28 Jul 2008 06:20:01 -0700, Ragab > <Ragab@discussions.microsoft.com> wrote: > >> Is there a compression program that can compress files to a very small >> size? >> I mean I need a program that can make a 100MB file --> 50MB or less if >> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not >> effective. >> Thanks for help > > > How much a file *can* be compressed depends on what type of file it > is, as well as what data it contains. As a single simplistic example, > if there were a text file that consisted of nothing but the latter "x" > repeated 100 million times, it could easily be compressed to 15 bytes, > containing the characters "100 million x's". > And removal of that spurious possessive apostrophe would improve on that to 14 bytes.
Guest Ken Blake, MVP Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program On Tue, 29 Jul 2008 09:55:03 +0100, "M.I.5¾" <no.one@no.where.NO_SPAM.co.uk> wrote: > > "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message > news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... > > On Mon, 28 Jul 2008 06:20:01 -0700, Ragab > > <Ragab@discussions.microsoft.com> wrote: > > > >> Is there a compression program that can compress files to a very small > >> size? > >> I mean I need a program that can make a 100MB file --> 50MB or less if > >> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > >> effective. > >> Thanks for help > > > > > > How much a file *can* be compressed depends on what type of file it > > is, as well as what data it contains. As a single simplistic example, > > if there were a text file that consisted of nothing but the latter "x" > > repeated 100 million times, it could easily be compressed to 15 bytes, > > containing the characters "100 million x's". > > > > And removal of that spurious possessive apostrophe would improve on that to > 14 bytes. LOL! There's no question that the apostrophe is spurious. It's flat out wrong. But it wasn't just a typo. I actually noticed it when I wrote the message, deleted it, then decided that xs looked very confusing. So I changed it to "x"s, and then changed it back, because that made it 16 bytes. Either way, I think my point was clear. Ken -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup
Guest 3c273 Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program How about 7 bytes? 10e6(x) Louis </fun> "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message news:t0au84d5l4ortuta1i6k4sf9dlt3bhjivt@4ax.com... > On Tue, 29 Jul 2008 09:55:03 +0100, "M.I.5¾" > <no.one@no.where.NO_SPAM.co.uk> wrote: > > > > > "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message > > news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... > > > On Mon, 28 Jul 2008 06:20:01 -0700, Ragab > > > <Ragab@discussions.microsoft.com> wrote: > > > > > >> Is there a compression program that can compress files to a very small > > >> size? > > >> I mean I need a program that can make a 100MB file --> 50MB or less if > > >> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > > >> effective. > > >> Thanks for help > > > > > > > > > How much a file *can* be compressed depends on what type of file it > > > is, as well as what data it contains. As a single simplistic example, > > > if there were a text file that consisted of nothing but the latter "x" > > > repeated 100 million times, it could easily be compressed to 15 bytes, > > > containing the characters "100 million x's". > > > > > > > And removal of that spurious possessive apostrophe would improve on that to > > 14 bytes. > > > LOL! There's no question that the apostrophe is spurious. It's flat > out wrong. But it wasn't just a typo. I actually noticed it when I > wrote the message, deleted it, then decided that xs looked very > confusing. So I changed it to "x"s, and then changed it back, because > that made it 16 bytes. > > Either way, I think my point was clear. > > Ken > > -- > Ken Blake, Microsoft MVP - Windows Desktop Experience > Please Reply to the Newsgroup
Guest Bill in Co. Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program Ken Blake, MVP wrote: > On Tue, 29 Jul 2008 09:55:03 +0100, "M.I.5¾" > <no.one@no.where.NO_SPAM.co.uk> wrote: > >> >> "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message >> news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... >>> On Mon, 28 Jul 2008 06:20:01 -0700, Ragab >>> <Ragab@discussions.microsoft.com> wrote: >>> >>>> Is there a compression program that can compress files to a very small >>>> size? >>>> I mean I need a program that can make a 100MB file --> 50MB or less if >>>> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not >>>> effective. >>>> Thanks for help >>> >>> >>> How much a file *can* be compressed depends on what type of file it >>> is, as well as what data it contains. As a single simplistic example, >>> if there were a text file that consisted of nothing but the latter "x" >>> repeated 100 million times, it could easily be compressed to 15 bytes, >>> containing the characters "100 million x's". >>> >> >> And removal of that spurious possessive apostrophe would improve on that >> to >> 14 bytes. > > > LOL! There's no question that the apostrophe is spurious. It's flat > out wrong. But it wasn't just a typo. I actually noticed it when I > wrote the message, deleted it, then decided that xs looked very > confusing. So I changed it to "x"s, and then changed it back, because > that made it 16 bytes. > > Either way, I think my point was clear. > > Ken Actually, it depends on the algorithm used to contain that information, and how its stored. And is the number being stored in real or integer format, etc, etc. So the actual length of the compressed file would be considerably more than 15 or 16 bytes, in reality. IOW, I'm pretty certain that when all is said and done, the final result for the compressed text file would be a LOT larger than 16 bytes, however. :-)
Guest Ken Blake, MVP Posted July 29, 2008 Posted July 29, 2008 Re: Request: A compression program On Tue, 29 Jul 2008 13:41:15 -0600, "Bill in Co." <not_really_here@earthlink.net> wrote: > Ken Blake, MVP wrote: > > On Tue, 29 Jul 2008 09:55:03 +0100, "M.I.5¾" > > <no.one@no.where.NO_SPAM.co.uk> wrote: > > > >> > >> "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message > >> news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... > >>> On Mon, 28 Jul 2008 06:20:01 -0700, Ragab > >>> <Ragab@discussions.microsoft.com> wrote: > >>> > >>>> Is there a compression program that can compress files to a very small > >>>> size? > >>>> I mean I need a program that can make a 100MB file --> 50MB or less if > >>>> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not > >>>> effective. > >>>> Thanks for help > >>> > >>> > >>> How much a file *can* be compressed depends on what type of file it > >>> is, as well as what data it contains. As a single simplistic example, > >>> if there were a text file that consisted of nothing but the latter "x" > >>> repeated 100 million times, it could easily be compressed to 15 bytes, > >>> containing the characters "100 million x's". > >>> > >> > >> And removal of that spurious possessive apostrophe would improve on that > >> to > >> 14 bytes. > > > > > > LOL! There's no question that the apostrophe is spurious. It's flat > > out wrong. But it wasn't just a typo. I actually noticed it when I > > wrote the message, deleted it, then decided that xs looked very > > confusing. So I changed it to "x"s, and then changed it back, because > > that made it 16 bytes. > > > > Either way, I think my point was clear. > > > > Ken > > Actually, it depends on the algorithm used to contain that information, and > how its stored. And is the number being stored in real or integer format, > etc, etc. > > So the actual length of the compressed file would be considerably more than > 15 or 16 bytes, in reality. IOW, I'm pretty certain that when all is said > and done, the final result for the compressed text file would be a LOT > larger than 16 bytes, however. :-) Yes, it wasn't meant to be an actual algorithm that any existing software actually uses, just an oversimplified example of one of the kinds of thing that are done, and how dramatically a highly repetitious file can be compressed. -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup
Guest M.I.5¾ Posted July 30, 2008 Posted July 30, 2008 Re: Request: A compression program "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message news:t0au84d5l4ortuta1i6k4sf9dlt3bhjivt@4ax.com... > On Tue, 29 Jul 2008 09:55:03 +0100, "M.I.5¾" > <no.one@no.where.NO_SPAM.co.uk> wrote: > >> >> "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message >> news:9lor84hgjhv0g29re6rhho3m4kmlmjoo8n@4ax.com... >> > On Mon, 28 Jul 2008 06:20:01 -0700, Ragab >> > <Ragab@discussions.microsoft.com> wrote: >> > >> >> Is there a compression program that can compress files to a very small >> >> size? >> >> I mean I need a program that can make a 100MB file --> 50MB or less if >> >> possible. I tried WinRar, WinZip, and KGB Archiver. But they r not >> >> effective. >> >> Thanks for help >> > >> > >> > How much a file *can* be compressed depends on what type of file it >> > is, as well as what data it contains. As a single simplistic example, >> > if there were a text file that consisted of nothing but the latter "x" >> > repeated 100 million times, it could easily be compressed to 15 bytes, >> > containing the characters "100 million x's". >> > >> >> And removal of that spurious possessive apostrophe would improve on that >> to >> 14 bytes. > > > LOL! There's no question that the apostrophe is spurious. It's flat > out wrong. But it wasn't just a typo. I actually noticed it when I > wrote the message, deleted it, then decided that xs looked very > confusing. So I changed it to "x"s, and then changed it back, because > that made it 16 bytes. > > Either way, I think my point was clear. > Having relooked at this, it seems your apostrophe was not as spurious as I first thought. Although an apostrophe is generally grammatically wrong in a plural, there are, as ever, exceptions to the rule. Your example is in fact one of them as you are refering to the x's themselves and not what the symbol represents (crap explanation but the best I can do this time of the morning). Another example is where you are refering to the word itself and not what it represents as in: I'll take no if's or but's from you. Your point was spot on though.
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