Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Sed sed risus pretium quam vulputate. Ut tortor pretium viverra suspendisse potenti nullam. Quis imperdiet massa tincidunt nunc pulvinar sapien et ligula. Placerat duis ultricies lacus sed turpis tincidunt id aliquet risus. Neque viverra justo nec ultrices dui sapien eget mi. Sit amet nisl suscipit adipiscing bibendum est. Egestas erat imperdiet sed euismod nisi. A arcu cursus vitae congue mauris rhoncus aenean. Mauris rhoncus aenean vel elit scelerisque.
You can easily copy and still all text content from page that does not have a protection. So scrapers can automaticaly open your website, copy blog articles or product descriptions and paste them to their sites. This is how you can loss your SEO rankings and even get penalty from Google.
Protected text
Lorem
dolor
amet, consectetur adipiscing elit, sed do
tempor incididunt
labore et
magna aliqua. Sed
risus
quam vulputate.
viverra
Quis imperdiet
nunc pulvinar
duis
lacus sed turpis tincidunt
Neque viverra
dui
eget
Sit amet nisl suscipit adipiscing
Egestas
nisi. A
vitae
mauris
aenean. Mauris
This text is protected, some words are replaced with the images, but your visitors will not see the difference. You can't just copy all text from this page, because it has been converted in images. So, when scrapers copy your page content, they don't copy text, they copy images code something like (15625, 0l0-0.9921875l1.21875-0.078125l0.15625-2.1796875l1.109375, 0l0,).
It's possible to set different % of protection level (e.g. 60% of the text will be protected). Goolge and other search engines will see the original text (not images) so its not going to hurt your SEO rankings.
Just try to open this page source code and see the protected text yourself. The only one way you can still it is to rewrite manualy!