Compress A Zip File Further Mac

21-04-2021 admin

If you are using a Mac with 10.6 or lower OS, it won’t compress files. Moreover, you won’t able to extract individual files from a full iso/rar/zip file. Despite its certain flaws, The Unarchiver is a great tool. Igor Pavlov, the Russian developer of 7-Zip, has stated that the standard ZIP format is inferior to RAR and ZIP files created in 7-Zip. Though a lot does come down to the file types being compressed, RAR and 7-Zip's ZIP archives compress data as much as 30 to 40% better than standard ZIP. ZIP is way more popular than.gz files in on Windows, Gzip on the other side is the standard file compression for Unix, Linux and Mac OS operating systems. ZIP files can package and compress files/directories on by it’s own, unlike gzip, who needs the help of another command like tar to archive/package the files.

2020-12-21 15:09:04 • Filed to: Knowledge of PDF • Proven solutions

Do you want to convert PDF to ZIP and you are not sure which platform to use? PDF to ZIP converter online comes in handy when you are having small PDF files that you need to convert them quickly. However, if you have large PDF files you have to use PDF to ZIP converter for PC. Luckily, this article has been well written to guide you on how to convert PDF to ZIP online. Later we will show you how to convert PDF files to other formats using PDFelement for Windows.

How to Convert PDF to ZIP online, free
How to Convert PDF to Other File Formats

How to Convert PDF to ZIP Online

One of the PDF to ZIP converters online that you can use is OnlineConvertFree. This web-based application enables you to upload several PDF files and convert them to ZIP file. Although the website has ads that can disturb you, you can still convert and compress PDF file to ZIP file eventually. It is free to use and there are no signups required to use this converter.

Without further ado, let us now look at how to convert PDF to ZIP files using OnlineConvertFree.

Step 1: Open the PDF to ZIP Converter Online

On your browser go to OnlineConvertFree website. On the website ensure you are on convert to Zip files page.

Step 2: Upload PDF File and Select 'To ZIP'

Next, you need to upload your PDF file to the ZIP converter. Click on the 'Choose Files' button and select the PDF file from your computer and upload it. Once you have opened the PDF file with the converter now choose the output format as ZIP before you start converting.

Step 3. Compress PDF to ZIP

At this point, all is set. You can now convert PDF to ZIP online by click on the 'Convert' button. The process of converting PDF to ZIP file will begin immediately. You will be able to see the progress on the screen.

Step 4. Download the PDF to ZIP File after Converting

Lastly, once you have compressed PDF to ZIP file you can now download and save it to your computer. Click on 'Download' and the ZIP file will be saved to your local drive.

How to Convert PDF to Other File Formats

Other than using an OnlineConverterFree you can use PDFelement to convert your PDF file to different formats. This application allows you to upload files of unlimited sizes and compress them to different formats like Excel, Word, PowerPoint, Plain Text, HTML, EPUB, and Image format. Before converting the file, this tool allows you to optimize PDF file size to the desired size without changing its format. Moreover, it allows you to batch process files that is when you are merging, uploading or converting PDF files.

With this PDF utility you can also explore this feature:

PDF Editor - It has an inbuilt PDF file enables you to edit PDF file texts, images and links.
Create PDF - You can create PDF files from existing PDF files, Word, Excel and different types of images.
Combine PDF Files - This functionality allows you to combine several PDF files to one manageable document.
PDF form filler - Its PDF form filler enables you to create PDF forms and fill out PDFs.
OCR technology - This option enables you to scan image-based PDF files and make the editable including the PDF forms.
PDF Converter - You can convert PDF to any other file formats with high quality.

Here is a guide on how to convert, compress and share PDF files with it.

Step 1. Open PDF File

Click the 'Free Download' button and install it. Once you have installed it click on 'Open File' icon to choose the PDF file to compress. Next, Click 'Open' to open the PDF file with the program.

Step 2. Convert PDF to Other Output Format

You can edit the PDF file but since you want to convert to the PDF file only, click on the 'Convert' menu at the top menu. You can choose one format from the options like Word, Text, PPT and other formats.

Step 3. Compress PDF File

Before you convert the PDF file, you can consider compressing your PDF file. Click on the 'Optimize' button under the 'File' menu. An optimize window will pop up. From there, you can now adjust from low to high quality. You will see the final size and the percentage to which the file has been reduced on the screen. Now click on 'Optimize' to compress the PDF file immediately.

Step 4. Share PDF File

Now that you have optimized your file to the shareable size you can now share it directly via PDFelement. Click on the 'File' button and scroll down to the 'Share' option. Choose 'Email' option and your file will be attached to the emailing app that you are using. Enter the recipient mail, the subject and send you file.

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Compression Speed and Efficiency

Different programs utilize different compression algorithms and have different compression settings to choose from. Some programs or settings prioritize speed—how quickly compression can be completed—while others sacrifice speed to focus on achieving a smaller file size.

Compression efficiency is also affected by file types. Text files can be compressed considerably, for example, but multimedia files, like MP3s or AVIs, may already be in a compressed state, meaning further compression may decrease folder or file size only slightly.

Utilizing different and more efficient algorithms sometimes calls for a change in file extension. For example, the program 7-Zip can use LZMA and LZMA2 compression algorithms, which result in a '.7z' file extension. These algorithms are much better at compressing files than the default ZIP method, which is fast but uses older and less efficient DEFLATE compression. However, the file extensions required for newer compression methods, which are not supported in any operating system by default, mean you may sacrifice accessibility when using them to share files. Likewise, RAR is better at compression than ZIP, but it, too, requires other software prior to use, even for simple data extraction/decompression.

In deciding which compression method to use, you should figure out which features you need most: speed, efficiency, accessibility, security, etc.

Compression Example

Igor Pavlov, the Russian developer of 7-Zip, has stated that the standard ZIP format is inferior to RAR and ZIP files created in 7-Zip. Though a lot does come down to the file types being compressed, RAR and 7-Zip's ZIP archives compress data as much as 30 to 40% better than standard ZIP.

Compress Zip File Further

Pavlov proved this by compressing an installation of Google Earth 3.0.0616. Before compression, Google Earth was 23.5 MB in size. Standard ZIP compressed this by 62%, while RAR achieved 71% compression and 7-Zip reached 76% compression.

Security

A program is required to secure ZIP and RAR files with a password. RAR files require WinRAR for compression in the first place, and WinRAR has password encryption settings you can use. Meanwhile, ZIP's default support in operating systems does not come with password protection settings in recent years; programs like 7-Zip or WinZip are required.

How secure the password protection on a ZIP or RAR file is depends partly on the program used to protect it. WinRAR uses an AES-128-bit encryption, but 7-Zip uses the more secure AES-256. This means that a password-protected ZIP file created in 7-Zip would take longer to crack than a RAR file created in WinRAR.

A lot of security comes down to password quality, though, too. Simple, one-word passwords that might be found in an English dictionary are very insecure and prone to brute-force attacks, regardless of your ZIP or RAR's encryption algorithms.

A ZIP or RAR with AES-128 encryption or better that has a good password would probably take years for supercomputers to crack. At present, there is no known attack that works well in such a scenario.

Programs

As the most popular archive file format, ZIP is not only built into most operating systems, but also recognized or improved upon by many other programs, like 7-Zip or IZArc, which are both freeware, and WinZip, which is shareware.

The following video explains how to create a ZIP file using both Windows' built-in support and the program 7-Zip:

Eugene Roshal, a Russian software engineer, is the developer of the RAR archive format and the owner of the WinRAR software. He has licensed the use of RAR decompression to many other programs outside of his WinRAR program (e.g., 7-Zip and WinZip) with the agreement that his work not be reverse engineered, but only WinRAR can compress data into a RAR file. As shareware, WinRAR has a free 40-day trial and costs $29.00 thereafter.