Have URLs for a total of 10k sites where each of the URLs are categorized by industry (and on different industry CSV files) -------- Goal is to find the top 5-10 keywords on each site in the most efficient way possible ---------- site recommendations?

So I have about 30 individual CSVs with varying number of URLs on each

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Looking to upload each CSV and find common keywords by individual CSV (and being able to take out the words like 'the' 'and' etc, to doing anything else like that which can help me compare my individual files

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Site suggestions for this, from free to paid?

- We'd be using the results of this information commercially, showing anywhere from 3 to 10 top keywords from each URL (so by company) in our app