Frequently asked questions

Yes. No credit card, no email, no account required. Just upload and convert.

Absolutely. Files are processed on our servers and automatically deleted. Download links expire after 15 minutes. We never keep copies.

The free tier supports files up to 50 MB. For larger files, a one-time unlock is available.

We support 26 input formats: PDF, DOCX, ODT, RTF, TXT, HTML, HTMLZ, TXTZ, AZW, AZW3, AZW4, MOBI, PRC, CBZ, CBR, CBC, FB2, LIT, LRF, CHM, PDB, PML, RB, SNB, TCR, and more. Output is always a clean, standards-compliant EPUB.

No. Converter EPUB runs entirely in your browser. We use the same Calibre engine that powers the industry-standard desktop app, but you never have to install it.

Yes. Our EPUB output follows the EPUB 3 standard and is tested on Kindle, Kobo, Apple Books, Google Play Books, and most third-party readers.