Converting EPUBs directly in the browser offers high speeds and unmatched privacy. However, e-books vary wildly in their internal structures. Below are solutions to the most frequent EPUB generation faults.
1. The Book Remains "Empty"
If you upload your `.epub` and it generates an empty document or skips chapter rendering, your e-book may be protected by DRM (Digital Rights Management). Our client-side parser cannot decrypt DRM files. You must try with a DRM-free version or strip the DRM prior to conversion.
2. Massive Chapters Crashing the Browser
Some poorly optimized EPUBs bundle an entire 400-page book into a single monolithic HTML file internally. Our renderer isolates chapters to prevent memory leaks, but a monolithic file forces it to hold the entire structure in RAM simultaneously. If this stalls your browser, splitting the epub via Calibre first is advised.
3. Fonts or Images Missing
Because EPUBs are essentially zipped web pages, sometimes the paths linking CSS stylesheets or embedded font files are broken in the source. Re-exporting the EPUB through an editor often corrects structural pathing errors.