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Hirusha Viraj
Hirusha Viraj

7z Download Online: How to Compress and Extract Files with High Efficiency

How to Download and Compress Files to 7z Format Online

If you are looking for a way to save space on your hard drive or send large files over the internet, you might want to consider using the 7z file format. This is a compressed archive file format that supports high compression ratio, encryption, and various compression methods. In this article, we will show you how to download and compress files to 7z format online, using different tools and websites.

7z download online


What is 7z File Format and Why Use It?

A 7z file is an archive file created by , a free and open-source file compression tool. It is similar to other archive formats, such as zip, rar, tar.gz, and iso, but it uses a higher compression ratio and supports AES-256 encryption. Some of the main features of 7z format are:

  • Open architecture: It can support any new compression methods and algorithms.

  • High compression ratio: It can compress files up to 70% better than zip format, depending on the data used for the tests.

  • Strong encryption: It can protect files with a password using AES-256 algorithm.

  • Large file support: It can handle files up to 16 billion GB in size.

  • Unicode file names: It can support any characters and languages in file names.

  • Solid compressing: It can improve compression ratio by combining similar files into a single block.

  • Archive headers compressing: It can reduce the size of archive headers by using different methods.

To open a 7z file, you need to install or another third-party software that supports 7z files, such as WinRAR, PowerArchiver, TUGZip, or IZArc. You can also use online tools that can extract or convert 7z files without downloading any software.

How to Download 7z Files Online

If you want to download some files that are compressed in 7z format, you have two main options:

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Using 7-Zip Official Website

The easiest way to download 7z files online is to visit the . There you can find the latest version of the program for Windows, Linux, MacOS, and other platforms. You can also download the source code, plugins, command line version, and other extras. The website also provides information about the features, license, history, and changelog of 7-Zip.

Using Online Converters and Extractors

If you don't want to install any software on your computer, you can use online converters and extractors that can handle 7z files. These are websites that allow you to upload your 7z files and either extract them to your device or convert them to another format. Some examples of these websites are:

  • : A free online utility that can open and extract 7z files in your browser. It supports many other file formats and conversions. It does not have file size limits or require you to upload/download files to a server.

  • : A universal app for file conversions that supports over 500 file formats. It can convert your 7z files to zip, rar, tar.gz, iso, and more. It also offers advanced settings for compression level, cloud storage.

Using ezyZip

A third option is to use , a free online utility that can open and extract 7z files in your browser. It can also compress your files to 7z format online. To use it, you need to follow these steps:

  • Go to and click on the "Create Archive" tab.

  • Click on the "Add Files" button and select the files you want to compress. You can also drag and drop your files or choose them from your cloud storage.

  • Select the output format as "7z" and click on the "Create Archive" button.

  • Download your 7z file or save it to your cloud storage.


In this article, we have shown you how to download and compress files to 7z format online, using different tools and websites. We have explained what 7z file format is and why use it, how to open 7z files on different platforms, how to download 7z files online using 7-Zip official website or online converters and extractors, and how to compress files to 7z format online using CloudConvert, FreeConvert, or ezyZip. We hope you have found this article helpful and informative. Here are some recommendations and tips for using 7z files online:

  • Always check the source and the quality of the files you download online. Some websites may contain malware or viruses that can harm your device or data.

  • Always backup your important files before compressing or extracting them online. Some online tools may not preserve the original file names, attributes, or permissions of your files.

  • Always choose a strong password for your 7z files if you want to protect them from unauthorized access. You can also use encryption software or VPN services to enhance your security and privacy online.


What is the difference between 7z and zip?

7z and zip are both compressed archive file formats, but they have some differences in terms of compression ratio, encryption, compatibility, and features. 7z has a higher compression ratio than zip, meaning it can reduce the file size more effectively. 7z also supports AES-256 encryption, while zip only supports ZipCrypto encryption, which is less secure. However, zip is more compatible with different platforms and software than 7z, which may require additional tools or plugins to open. Zip also has more features than 7z, such as support for digital signatures, comments, split archives, and self-extracting archives.

What is the best compression ratio for 7z files?

The best compression ratio for 7z files depends on several factors, such as the type of data, the compression method, the compression level, and the solid block size. Generally speaking, the higher the compression level and the solid block size, the better the compression ratio. However, this also means longer compression time and more memory usage. The type of data also affects the compression ratio, as some data are more compressible than others. For example, text files are more compressible than image files. The compression method also matters, as some methods are more suitable for certain types of data than others. For example, LZMA2 is better for text files than BZip2.

How to password protect 7z files?

To password protect 7z files, you need to use a tool that supports encryption for 7z files, such as . When you create or convert your 7z files with these tools, you can choose to encrypt them with a password using AES-256 algorithm. You can also adjust other settings for encryption, such as dictionary size, word size, number of CPU threads, etc. To open a password protected 7z file, you need to enter the correct password with the same tool or another tool that supports decryption for 7z files.

How to split large 7z files into smaller parts?

To split large 7z files into smaller parts, you need to use a tool that supports splitting for 7z files, such as . When you create or convert your 7z files with these tools, you can choose to split them into smaller parts by specifying the size of each part. You can also choose the format of the split parts, such as 7z, zip, rar, etc. To join the split parts, you need to use the same tool or another tool that supports merging for 7z files.

How to repair corrupted 7z files?

To repair corrupted 7z files, you need to use a tool that supports repairing for 7z files, such as . These are software that can scan your 7z files and fix any errors or damages that may prevent them from opening. They can also recover some data from the corrupted 7z files. To use these tools, you need to download and install them on your computer, then follow the instructions on their interface.


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