7-Installing and using Zip

7zip-icon

An open source multifunctional file archiver that can also get checksums and edit archive files

7-Zip The Igor Pavlov He is developing an open source file archiver that supports file / folder compression and archive file decompression, as well as checksum acquisition and direct editing of archive files, making it simple and easy to use in the enterprise. Some manufacturers pre-install 7-zip such as HP because it is completely free including usage.

System requirements

Version 22 as of

OS: Windows 2000 / XP / Vista / 7/8/10

It also works on Windows 11.

Where to get the software

SourceForge 7-zip Japanese download page

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7-zip installation

The 7-zip installer does not include adware or spyware.

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Download the installer according to the environment of your PC.

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Launch the downloaded installer, and when the User Account Control dialog is displayed, click "Yes" to allow it.

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The setup screen will be displayed, so if you are not particular about the installation destination, click "Install" with the default settings.

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When the progress bar reaches 100%, click "Close" to complete the installation.

Context menu settings

Since 7-zip mainly operates from the context menu (right-click menu), hide unused menus and organize the menus.

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スタート から 7-Zip File Manager And in the menu bar tool から optionSelect.

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7-Zip Of tabs Menu itemUncheck unnecessary menus with.

How to use 7-zip

7-Zip is a file / folder compression And of the archive file UnzipIn addition,Get checksum , Direct editing of archive files You can

Formats that support compression / decompression
7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM
Formats that support decompression
AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.

compression

After selecting the file or folder you want to compress, specify the file format from 7-zip in the context menu and execute the compression process.

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In the context menu if the selected item is compressible 7-zip Menu is displayed.

 compression
Detailed settings such as file format, compression level, compression format, and password are possible.
Compressed to ~ 7z
Performs compression in 7z format, which has a higher compression ratio than Zip files.
 Compress to zip
Performs the most versatile Zip format compression.

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If you use the TAR or WIM (Windows Imaging Format) format, use the context menu. compression Select, and on the detailed setting screen Archive format Edit.

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Compression level Is the default M use.

If you zip a 100MB folder that contains multiple files such as images and text,FastestSuper compression The difference is about 1MB.

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Compression method Then. Zip High compression is possible with Lzma Can be used Reduced versatilityDefault to Deflate Recommended to use.

ZIP files that use LZMA or BZip2 as the compression format will fail to decompress except for some files such as PNG due to an error when decompressing with the standard Windows decompression function.
Self-expanding archive

Archive format 7z When selected, you can optionally create a self-extractable archive file.

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To enable self-development  Archive format7z Select andOptionsCreating a self-deploying archive To enable.

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Files that can be self-extracted 7z Icon Executable file become.

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When you open the executable file, the extraction of the file starts.

7z Has a higher compression ratio than Zip and is convenient, Executable file Cannot be sent by attaching it to an e-mail, so it is necessary to use online storage etc. to transfer the file.

Unzip (decompress)

Unzip (decompress) the archive file is also performed from the context menu.

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Select the compressed file and select the context menu 7-zip から Unfolded .

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Specify the extraction destination and click "OK" to decompress the file.

Expand here
The setting screen is skipped and the file is expanded in the location where the archive file is saved.
Expand to <folder name>
Create a folder with the same name as the file to be unzipped, and extract the files in the folder.

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If the archive file is password protected, you will be prompted for the password.

Viewing / editing archive files

7-Zip can open archive files directly without extracting them, and can edit and overwrite items in the archive aisle.

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After selecting the archive file, select the context menu  7-zip から 開 く choose.

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7-zip File Manager Opens in the archive file, and each file can also be directly viewed using the associated app.

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For files and folders in the archive file, you can also operate the file alone with the tool icon.

Unfolded
Unzip the selected files and folders to the individually specified save destination.
Tests
Check if the selected file or folder is missing.
Copy
Same as "Deploy".
mobile
Not available (not implemented).
Delete
Delete the selected file / folder from the archive file.
情报
Creation date of the selected file / folder You can check information such as compression method and file size.
追加 Is a menu that compresses selected files / folders, not the one used for archive files, in the context menu compression Same as.

Checksum

Checksum The Hash value By using to check the identity of a file, you can get the hash value of the created archive file and match it with the hash value provided to check if the archive file is at risk.

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If you want to get the checksum of the file, use the context menu CRC SHA Select andCRC-32 / CRC-64 / SHA-1 / SHA-256 Select a hash function from.

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* You can get all hash values ​​by selecting.

If the file contains extra files such as missing or malware, the hash value will be different, so by providing the hash function used by the source of the archive file and the hash value obtained, the recipient can get the file. You can check the normality.
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