Eli5. How does a PDF compressor work? How does it give the same quality, with lower size?

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I compressed a PDF file that was around 95 MB, and the online compressor compressed it to only 1.15 MB, but when I viewed the file it still has a great, almost exact same quality.

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5 Answers

Anonymous 0 Comments

The word file means a folder for something.

A PDF file is a folder for stuff..

One of those stuff is the document – the collection of images, words that you read on the screen.

There are usually other stuff, such as notes uncle Bob (bob.exe) left when he made some changes. Do you remember Aunt Mary? She talked quite a lot and wasn’t good at documenting things so she always added extra details than necessary. Whenever someone makes changes, a little bit of extra stuff gets added.

A PDF compressor comes in and says yo guys, we don’t need uncle bob or mary to be in this shit anymore. It’s been a long time, let’s remove that stuff but leave the main images and words intact! Those are important.

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