- Zamzar - Wikipedia
Zamzar is an online file converter and compressor, created by brothers Mike and Chris Whyley in England in 2006 [1][2] It allows users to convert files online, without downloading a software tool, and supports over 1,200 different conversion types [3] Since its formation, the service has converted over 510 million files for users [4] from 245 different countries [5] The service supports the
- 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]
- List of archive formats - Wikipedia
Many compression algorithms are available to losslessly compress archived data; some algorithms are designed to work better (smaller archive or faster compression) with some data types Archive formats are used by Unix-like and Windows operating systems to package software for easier distributing and installing than binary executables
- 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
- 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
- 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
- LZMA - Wikipedia
The Lempel–Ziv–Markov chain algorithm[1] (LZMA) is an algorithm used to perform lossless data compression It has been used in the 7z format of the 7-Zip archiver since 2001 [2] This algorithm uses a dictionary compression scheme somewhat similar to the LZ77 algorithm published by Abraham Lempel and Jacob Ziv in 1977 and features a high compression ratio (generally higher than bzip2) [3
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