I have a CSV-File which is 500MB of size. I am searching for a way to compress is to it smallest possible size. I actually received the file back then in a ZIP-Folder which was only about 50MB of total size, therefore i know it must be possible to compress that file this much. I am using 7-Zip and i tried every possible combination already but i only can compress it by about 20 MB, means from 500MB to 480MB. Do you have any advice on that? Thank you very much.
Compress large CSV FIle? (500MB)
7-zipcompressionzip
Related Solutions
The archivers with the highest compression ratio would be KGB (which has been used to compress a 430 MB MS Office ISO image to fit on a floppy disk) and Uharc (a high compression multimedia archiver), but they're not necessarily the fastest. The compression will be lossless.
If you want to reduce the size via the bitrate (and thus the quality), I recommend this program:
MP3 Quality Modifier makes it really easy to change the bitrate of your MP3 music collection so that the filesize can be dramatically reduced. With this advantage it's possible to put more music on your MP3-player or just to save some disk space. Even advanced tasks are possible: Downsampling, changing the used channels and so on. With the included presets it's simpler than ever before to manage all those settings.
Best of all is that - unlike other software - the ID3 tags (title, album pictures, etc.) will be completely retained without any effort!
Main features:
* Change MP3 quality with just a few clicks.
* Really easy and intuitive interface.
* Retain all ID3 tags with ease.
* Advanced options: detailed bitrate settings, sample frequency, etc.
* Quality comparison: compare created files with original ones.
* Multilingual: English, French, German, Italian, Portuguese, Spanish.
* Portable: extremely small, just one executable, no installation.
* Free of charge!
All programs are freeware and portable.
And if you want to learn more about audio ripping and MP3, here's a very comprehensive tutorial:
The content of the PDFs (text & images) is probably already compressed -- so there's not going to be much to gain by trying to compress them again.
Best Answer
Thanks to "DrMoishe Pippik". He told me that the problem could be a memory limitation of the device i am using to compress the folder. This was exactly the problem. I compressed the file on another device and now it is compressed to 90MB. By the way, i am using the most current 7-Zip Version on both devices.