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2. GIF - Wikipedia

   en.wikipedia.org/wiki/GIF

   In April 2014, 4chan added support for silent WebM videos that are under 3 MB in size and 2 min in length, [76] [77] and in October 2014, Imgur started converting any GIF files uploaded to the site to H.264 video and giving the link to the HTML player the appearance of an actual file with a .gifv extension.

3. Lempel–Ziv–Welch - Wikipedia

   en.wikipedia.org/wiki/Lempel–Ziv–Welch

   LZW compression became the first widely used universal data compression method on computers. A large English text file can typically be compressed via LZW to about half its original size. LZW was used in the public-domain program compress, which became a more or less standard utility in Unix systems around 1986.

4. Image compression - Wikipedia

   en.wikipedia.org/wiki/Image_compression

   Image compression is a type of data compression applied to digital images, ... Whole-image palette, typically 256 colors, used in GIF and PNG file formats.

5. Comparison of graphics file formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_graphics...

   GIF: Graphics Interchange Format CompuServe, Unisys (compression algorithm) .gif, .gfa, .giff image/gif General purpose, obsolete, now only used for animations Yes HEIF: High Efficiency Image Format Motion Pictures Expert Group (MPEG) .heif, .heic image/heif, image/heic, image/heic-sequence, image/heif-sequence General purpose No HDRi: TIFF ...

6. LZ77 and LZ78 - Wikipedia

   en.wikipedia.org/wiki/LZ77_and_LZ78

   LZ77 and LZ78 are the two lossless data compression algorithms published in papers by Abraham Lempel and Jacob Ziv in 1977 [1] and 1978. [2] They are also known as Lempel-Ziv 1 (LZ1) and Lempel-Ziv 2 (LZ2) respectively. [3]

7. WebP - Wikipedia

   en.wikipedia.org/wiki/WebP

   WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression, [8] as well as animation and alpha transparency. Google announced the WebP format in September 2010, and released the first stable version of its supporting library in April 2018.

8. Attach or insert files, images, GIFs and emojis in New AOL Mail

   help.aol.com/articles/attach-files-or-insert...

   - Your computer's file manager will open. Find and select the file or image you'd like to attach. Click Open. The file or image will be attached below the body of the email. If you'd like to insert an image directly into the body of an email, check out the steps in the "Insert images into an email" section of this article.

9. Image file format - Wikipedia

   en.wikipedia.org/wiki/Image_file_format

   Lossless compression algorithms reduce file size while preserving a perfect copy of the original uncompressed image. Lossless compression generally, but not always, results in larger files than lossy compression.