https://tuhat.net allows you to set a page size for your post and input hidden page breaks for when people download the epub version or print your posts, it doesn't affect the web version.

There is also a zine booklet mode which works out page imposition to print out a zine (eg. double sided, folded in half)

Click the printer icon on any tuhat post.

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fouc 7 hours ago | parent [-]

this is for the authors/publishers of tuhat writing platform you mean?

	▲	8by3 5 hours ago \| parent [-]
		Inserting the page breaks is for the authors, its a button in the editor when creating a post. The download epub / create printable pdf are on the posts for readers.