This kind of behavior should be analyzed according to the specific situation.
If the author intends to upload it, the purpose is to let everyone enjoy it. Reproduction or downloading and then dissemination do not constitute infringement, because the author, as the copyright owner, has already transferred some rights. As long as you don't infringe on his right to modify (also called the right to protect the integrity of the work) or his right to sign (for example, you can't say that this is your work)
But if the author is paid to browse online. If it is copied and distributed with compensation, it is an infringement of its copyright and may be investigated for civil tort liability.
Supplementary answer:
Infringement of copyright here refers to infringement of the right to obtain benefits and the right to spread. At this time, the other copyright owner can ask you to compensate for the loss, apologize, return unjust enrichment and so on. More importantly, if your copyright infringement is serious or huge, it may constitute criminal responsibility and be suspected of copyright infringement.
I hope my answer can help you!