File size very less when saving from Acrobat Reader DC (PDF) to .txt

[satheeshsoft]

I have a 120 MB file (PDF). Contents in that file especially from non English. It includes almost Indian languages. Its a PDF file so i opened from acrobat reader. And copied the contents by 'select All'  then right click 'copy' or 'ctrl c' options/any. 120 MB file so it taken a couple of minutes to copy the entire contents (progress bar).

It copied to clipboard and saved in a txt file normal notepad and 'encoding unicode big endian' format. But the file size became very less in notepad (around 17 MB).

I have doubt that, why this happened this much small file size rater that big size. Does there anything miss out?. i mean any data?

[try67 · Accepted solution]

PDF files contain much more information than just text. This is perfectly normal.

[satheeshsoft]

its may be the background rectangular window, on that window only the text appears.

[Test Screen Name]

No further explanation or guesswork is needed. Extracted text is usually much, much smaller than a PDF, because of the nature of PDF and of text.