Plugin/Theme for epaper

First, what exactly do you mean by “epaper”?

If by “epaper”, you mean flipbook-style browsing, there are several “flipbook” plugins out there: https://ww.wp.xz.cn/plugins/search/flipbook/

From what I can make of it, it seems the Times of India “epaper” you mentioned is just a glorified website. The entry point has a screenshot of the print paper, but, beyond that, it’s just a normal website, an SPA or single-page app.

Digital is inherently a linear medium, and serving static PDFs of the print paper — even with the flipbook-style page flipping — generally makes a very terrible user experience. In most cases, you either see tiny text sizes you can’t read, or you zoom in and then have to scroll back and forth a million times to read a single story.

One interesting plugin I came across a while back is IssueM. But this works in reverse of what you want: rather than making users arduously flip through the static PDF edition of the print paper, this plugin begins with the liner online versions of the stories (normal WordPress posts).

It puts a collection of posts into an “issue”. Each “Issue” gets a customizable cover image mimicking a newspaper/magazine front page, but individual stories in the issue can be browsed linearly (they’re WordPress posts after all). The plugin also creates a PDF version of each “issue” automatically, and this can be browsed in a flipbook fashion).