Want to know how big the file you want to compress will be after compression? Please open the WinRAR window, select the folder or file you want to compress, and then click the "Information" button on the toolbar. In the open window, click the "Estimate" button in the "Estimate Compression Ratio" function bar, and WinRAR will give Data such as compression ratio, compressed package size, and estimated compression time are displayed, which is very useful for compressing larger files or folders. If you want WinRAR to automatically evaluate the file every time you click the "Information" button, you can also select the "Automatic Start" option.
WinRAR
Software introduction
WinRAR is a powerful compressed package manager. It is the graphical interface of the archive tool RAR in the Windows environment. This software can be used to back up data, reduce the size of email attachments, decompress RAR, ZIP 2.0 and other files downloaded from the Internet, and create new files in RAR and ZIP formats.
WinRAR is a file compression management software developed by Eugene Roshal (so the full name of RAR is: Roshal ARchive). The first public version, RAR 1.3, was released in 1993. Pocket RAR is free software released for the Pocket PC platform. It is one of the only software that can read and write RAR files because it retains copyright.
Eugene Roshal was born in Russia on March 10, 1972. Graduated from Chelyabinsk Technical University in Russia and is the author of the FAR file manager. He developed a program to compress/decompress RAR files, initially for DOS and later ported to other platforms. The main Windows version of the encoder, called WinRAR, is released as freeware. However, Roshal has disclosed the source code of the decoder, and the UnRAR decoder license allows free release and modification under conditions (condition: no release and compilation of RAR-compatible encoders is allowed). The RAR encoder has always been patented.
The most recent developer is Alexander Roshal. Although its decoder is patented, compiled decompressors still exist on several platforms, such as the open source 7-Zip. Despite the general confusion in the industry, there seems to be no pure open source module capable of decompressing RAR files older than version 2.0.
WinRAR's built-in program can decrypt various types of archive files, image files and TAR combinations such as CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, Z and 7Z. file; has history and favorites functions; new compression and encryption algorithms, the compression rate is further improved, and the resource usage is relatively small, and different compression configurations can be saved for different needs; fixed compression and multi-volume self-releasing compression and The optimization algorithm for text, multimedia and PE files is not available in most compression tools; it is very simple and convenient to use, and there are not many configuration options. You can complete the work you want to do just in the resource manager; for For self-releasing archive files of ZIP and RAR, you can easily know the compression attributes of the file by clicking on the properties. If there are comments, you can also view its content in the properties; unique recovery is provided for RAR format (including self-releasing) archive files. The recording and recovery volume functions ensure data security more fully.
WinRAR is a free software. Anyone can use it during a 40-day testing period. If you wish to continue using WinRAR after the test has expired, you must register.
There are no additional licensing fees. There are no additional licensing fees other than the registration costs associated with creating and publishing archives in RAR or self-extracting formats. Legitimate registered users can use their copies of RAR to create and distribute compressed files without any additional RAR royalties. If you register WinRAR, you can upgrade to all the latest versions for free.
The latest WinRAR version is the official version of WinRAR 4.11. There is still a fee for this.
Operating environment: Windows 9x and above.