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Wall-E the ultimate compressor
What is compression?
What is compression?
Compression in computing refers to the process of reducing the size of a digital file by encoding it using algorithms that eliminate redundant or less important information. The goal of compression is to store or transmit data more efficiently, thereby saving storage space or bandwidth. There are various types of compression, including lossless compression and lossy compression, and each type has its own set of advantages and disadvantages.
Lossy Compresson
Lossy compression is a method of data compression in which some data is lost, resulting in a smaller file size. The data that is lost is considered non-essential and its removal does not significantly impact the quality of the file. Commonly used to compress audio and video files
Pros:
Smaller file size: Lossy compression results in a much smaller file size, making it easier to store and transmit files.
Quicker to upload to a website or email
Quicker to download due to reduced file size
Cons:
Quality loss: The most significant disadvantage of lossy compression is that it results in a loss of quality in the data.
Irreparable loss of information: Unlike lossless compression, lossy compression permanently discards information, making it impossible to restore the original data.
Can't not be used on text files such as word documents as words may be missing leading to it not being readable.
Loseless Compression
Lossless compression is a method of reducing the size of a data file without losing any of the original information. This is achieved by identifying and removing redundant information in the file, or by compressing the data in a way that can be uncompressed to exactly the same original data.
No data loss: The main advantage of lossless compression is that it doesn’t alter or lose any information in the original file, ensuring that the quality and accuracy of the data are preserved.
Reversible: Lossless compression is reversible, which means that the compressed data can be uncompressed back to its original form, exactly as it was before compression.
Good for compressing text files that need to retain all words and symbols to make them readable
Cons:
Larger file size: Lossless compression may result in a larger file size compared to the original data, which can be an issue for storage and transmission.
Cannot compress all data file types
Use cases of compression:
Storing digital images: Digital images can be large in size, and compression is often used to reduce the amount of storage space required for images.
Sending email attachments: Compression can be used to reduce the size of attachments, making it easier to send and receive large files via email.
Storing audio and video files: Audio and video files can be large in size, and compression is often used to reduce their file size, making it easier to store and transfer these files.
Archiving data: Compression can be used to reduce the size of large data sets, making it easier to archive and store data for future use.
Streaming multimedia content: Compression can be used to reduce the amount of data that needs to be transmitted during streaming of multimedia content, allowing for smoother and more efficient streaming.
What type of compression would be suitable for spreadsheets
What type of compression would be suitable for spreadsheets
Answer - Lossless, as all the required data must be there, lossy would lead to loss of important data such as word and numbers on the spreadsheet
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