Software To Find Duplicate Paragraphs

[joko]

Does anyone know of any good software -
(preferably free obvs - but interested in paid too)
that i could copy & paste various sized 'paragraphs' or large chunks of text & find duplicates?

After a computer disaster years ago & loads of attempts to recover lost files, i'm finding huge documents (500,000 words) with the same sentences or chunks of identical text over and over again.
Some are more or less the same but some I've added notes to, so i want to keep some of them - so a complete find & replace won't work.

There are loads i want to keep, but if i can get rid of some of it, it won't feel like it's never going to end when I'm wading through it.

i found 1 that says you only get 5 duplicates before you have to pay, so i thought i'd see what else is out there, if there's anything better

Thanks :)

[emmie]

chris could probably help with this if he is about.

[barry1010]

Have you tried this? Not used it myself but maybe worth a look
https://apps.microsoft.com/store/detail/duplicate-finder/9P6B15ZWZ55X?hl=en-us&gl=us

[barry1010]

Have you tried copying an unusual sentence from one document, opening File Manager, This PC and pasting it in the search box?

It will take time but you will be in total control

[Old_Geezer]

I think that's for duplicated files, Barry.

[joko]

thanks all

and yes, that would find it in other documents - these are all in one massive document

[Old_Geezer]

If it is genuinely paragraphs you are looking for, maybe copy the start of the first one then use it to search the file. It'd take a while but bit by bit you'd get it done.