During format conversion, Calibre can perform some heuristic processing. For example detecting chapters and scenebreaks.

I've notices that a few epubs (especially from Project Gutenberg), could really do with that kind of heuristic processing. For example their chapters may not all be separated.

Is there a way I can execute the heuristic processing part of conversion without actually doing any conversion?


Use the command-line tool


If you use the command-line tool, you can do just this. Though you need to make sure the input filename and the output filename differ.

for example

ebook-convert myorig.epub mybetter.epub --heuristic-processing 
  • Note: the correct flag is now --enable-heuristics.
    – Fake Name
    Jun 24 '18 at 20:10

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.