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  2. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    List of file signatures. This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible.

  3. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    PDF files may contain a variety of content besides flat text and graphics including logical structuring elements, interactive elements such as annotations and form-fields, layers, rich media (including video content), three-dimensional objects using U3D or PRC, and various other data formats. The PDF specification also provides for encryption and digital signatures, file attachments, and ...

  4. Data compression - Wikipedia

    en.wikipedia.org/wiki/Data_compression

    Compression is useful because it reduces the resources required to store and transmit data. Computational resources are consumed in the compression and decompression processes. Data compression is subject to a space-time complexity trade-off. For instance, a compression scheme for video may require expensive hardware for the video to be decompressed fast enough to be viewed as it is being ...

  5. 7-year-old’s ‘funny little misspellings’ are the best thing ...

    www.aol.com/news/7-old-funny-little-misspellings...

    Lily Murray delights in using her label marker to stick labels on just about everything, and her phonetic spelling makes it simply adorable.

  6. 'Stay out': Signs in Kyoto's popular geisha district aim to ...

    www.aol.com/stay-signs-kyotos-popular-geisha...

    Kyoto has long been a popular destination, but visitors will no longer be able to venture into some private-property alleys in the geisha district.

  7. Lossy compression - Wikipedia

    en.wikipedia.org/wiki/Lossy_compression

    High-compression (low quality) JPEG. In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content.

  8. List of archive formats - Wikipedia

    en.wikipedia.org/wiki/List_of_archive_formats

    Archive formats are used for backups, mobility, and archiving. Many archive formats compress the data to consume less storage space and result in quicker transfer times as the same data is represented by fewer bytes. Another benefit is that files are combined into one archive file which has less overhead for managing or transferring. There are numerous compression algorithms available to ...

  9. Lossless compression - Wikipedia

    en.wikipedia.org/wiki/Lossless_compression

    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. Lossless compression is possible because most real-world data exhibits statistical redundancy. [1] By contrast, lossy compression permits reconstruction only of an approximation of the original data, though usually with greatly ...