compress (software) - Wikipedia compress is a shell command for compressing data based on the LZW algorithm [1] uncompress is a companion shell command that restores files to their original state (both content and metadata) from a file created with compress
Smallpdf. com - Wikipedia Smallpdf is a Swiss online web-based PDF software, founded in 2013 [2] It offers free version with limited features to compress, convert and edit PDF documents [3] And its paid version offers advanced features like OCR, compress, and more [4]
Lossless compression - Wikipedia Lossless compression is a class of data compression that allows the original data to be perfectly reconstructed from the compressed data with no loss of information
bzip2 - Wikipedia bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm It only compresses single files and is not a file archiver It relies on separate external utilities such as tar for tasks such as handling multiple files, and other tools for encryption, and archive splitting bzip2 was initially released in 1996 by Julian Seward It compresses most files more
7-Zip - Wikipedia 7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives" It is developed by Igor Pavlov and was first released in 1999 [2] 7-Zip has its own archive format called 7z introduced in 2001, [12] but can read and write several others The program can be used from a Windows graphical user interface that also features
Lempel–Ziv–Welch - Wikipedia Lempel–Ziv–Welch (LZW) is a universal lossless compression algorithm created by Abraham Lempel, Jacob Ziv, and Terry Welch It was published by Welch in 1984 as an improvement to the LZ78 algorithm published by Lempel and Ziv in 1978 Claimed advantages include: simple to implement and the potential for high throughput in a hardware implementation [1] A large English text file can
Data compression - Wikipedia Data compression In information theory, data compression, source coding, [1] or bit-rate reduction is the process of encoding information using fewer bits than the original representation [2] Any particular compression is either lossy or lossless Lossless compression reduces bits by identifying and eliminating statistical redundancy
Lossy compression - Wikipedia Lossy compression is most commonly used to compress multimedia data (audio, video, and images), especially in applications such as streaming media and internet telephony By contrast, lossless compression is typically required for text and data files, such as bank records and text articles
PDF - Wikipedia Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems [2][3] Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts
Data compression ratio - Wikipedia Data compression ratio, also known as compression power, is a measurement of the relative reduction in size of data representation produced by a data compression algorithm