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Most of them are free and open-source and released under the GNU General Public Licence version 2 or 3. The official clients support sending any file format extensions. The built-in media viewer supports common media formats – JPEG, PNG, WebP for images and H.264 and HEVC in videos in MP4 container and MP3, FLAC, Vorbis, Opus and AAC for audio.
"Free and open-source software" (FOSS) is an umbrella term for software that is simultaneously considered both free software and open-source software. [5] The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring ...
Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. The process employs the use of a cryptographic hash to validate authenticity and integrity. [ 1] Code signing was invented in 1995 by Michael Doyle, as part of ...
A PDF file is often a combination of vector graphics, text, and bitmap graphics. The basic types of content in a PDF are: Typeset text stored as content streams (i.e., not encoded in plain text ); Vector graphics for illustrations and designs that consist of shapes and lines;
JPEG. JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [ 2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.
Voyager 2 Artist's rendering of the Voyager spacecraft design Mission type Planetary exploration Operator NASA / JPL COSPAR ID 1977-076A SATCAT no. 10271 Website voyager.jpl.nasa.gov Mission duration 47 years elapsed Planetary mission: 12 years, 1 month, 12 days Interstellar mission: 34 years, 10 months, 18 days elapsed Spacecraft properties Manufacturer Jet Propulsion Laboratory Launch mass ...
[1] [25] His father founded the software firm Mark Williams Company. At an early age, Swartz immersed himself in the study of computers, programming, the Internet, and Internet culture . [ 26 ] He attended North Shore Country Day School , a small private school near Chicago, until ninth grade, [ 27 ] when he left high school and enrolled in ...
ZIP is an archive file format that supports lossless data compression. A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the most common.