Referral: draftable.com has a great online tool for comparing text of 2 PDF files

Readers may want to see my recent post on another blog of mine: draftable.com has a great online tool for comparing text of 2 PDF files, https://eklavyasai.blogspot.com/2020/06/draftablecom-has-great-online-tool-for.html. Note that such comparison is needed, at times, while self-publishing books (inner contents of book is typically provided as pdf file to self-publishing platform company).