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The second part of the evening was provided by Mike who gave us an insight into Archived and Compressed
files.

File Extension
Archived - Compressed

Mick Sulley
29 th May 2024

What is the Difference?

Archive Compression
⚫ Collects together many Takes a single file and makes it
related files and file types smaller
and moves them to storage

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What is Archive?

Packs things out of the way
e.g. Last years accounts, put in a box and store in the loft to
clear space on your desk.
Consolidates multiple files into one
e.g. documents, pdf’s scanned docs => Accounts2023.arch

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What is Compression?

⚫ Makes a file smaller without changing the data contained
(maybe!)
⚫ Lossy vs Non-Lossy
⚫ Reduced file size is easier to store, stream, email, etc.
⚫ Text doc compression ~ 90%
⚫ GIF image compression ~ 0%
⚫ Often need to reverse the process to recover the file (e.g. ZIP)

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