User consensus on EPUB readers varies significantly by device:

“EPUBs are less strict about formatting, and can be rendered differently on different devices, but can be less precise about how features like tables and footnotes are formatted.” Reddit · r/DataHoarder · 5 years ago

: The reMarkable tablet's native reader is frequently criticized for its poor handling of hyperlinks and slow reformatting. Community Perspectives

: Professionals often open EPUBs (which are just "special zip archives") in software like Sigil to check for "code smell"—excessive tags or broken links that can slow down your device.

: Use tools like EPUB-Checker to ensure the file follows standard specifications.

: Apps like BookFusion are highly praised for their customization options.

When downloading an EPUB via a specific hash/identifier, you should verify its "code health" to ensure a good reading experience: