Formats Kevra reads (and DRM books)

What Kevra opens

EPUB and FB2 open in the full reader: fonts, themes, highlights, read-aloud, dictionary… PDFs open in their own viewer, page by page (no highlights or read-aloud). Comics have their own reader, see Reading comics.

Right now Kevra doesn't open TXT, DOCX, RTF or standalone HTML files.

Formats Kevra converts for you

• MOBI, AZW3, AZW and PRC (Kindle formats) become EPUB when you add them.
• CBR, CB7 and CBT become CBZ.

The conversion happens on your own phone, offline and in a few seconds. Chapters, table of contents, images, notes and cover are kept. Your original file isn't touched.

If your phone can't handle an unusual file and you have an account, Kevra will offer to Convert it on our server. It usually takes less than a minute and the result goes into your library like any other book.

DRM books: why they can't be opened

DRM is a lock some stores and libraries put on books so they can only be read in their own apps. Kevra can't open:

• Books bought in the Kindle store: they carry Amazon's DRM and only open in their apps and devices.
• Public library loans (Libby/OverDrive, eBiblio and similar). What you download (an .acsm or .lcp file) isn't the book: it's the loan voucher, and the book it delivers is encrypted. Read it in your library's app.
• EPUBs protected with Adobe or other encryption systems.
• Audible audiobooks (.aax, .aa): they're encrypted with Audible's DRM.

Kevra recognizes them when you add them and tells you right away, instead of failing when you try to open them.

Note: a loan can't be “taken out” of the library's app: your phone doesn't let other apps see its files, and even if you could see them they'd be encrypted.

If you want to know which public libraries have a book, Kevra can look it up: see Where to get a book.

Other cases

• Password-protected comics: remove the password with your archive tool and add the comic again.
• A damaged file: if you add several at once, the ones that fail don't stop the rest. At the end you'll see how many couldn't be added.

If a book won't open, see I can't open a book.