open a book .mobi with calibre is taking 15 minutes, normal ?????

[Horus68]

To read mobi on Windows:

FBReader - https://fbreader.org/
Simple, faster

STDU Viewer http://www.stdutility.com/stduviewer.html

Kindle for PC https://www.amazon.com/kindle-dbs/fd/kcp

Sumatra PDF https://www.sumatrapdfreader.org/free-pdf-reader.html
(issues opening some MOBI files I have, not all)

Freda http://www.turnipsoft.co.uk/freda/
(Note: its an Windows store app... with ugly interface but configurable!)

On books: I do prefer ePub over Mobi.

On Calibre: I don't read that much on Desktop PC but when using PC I consider Calibre mainly a book organizer not my main reader app

[tancraide]

I will try FBReader…

All the others are no to good…. except STDU

STDU react as Calibre… took 12 minutes to open the mobi……. But the functionnaly are fast and good, all the minuscule annotations are there, etc.… Even better then Calibre
Open PDF fast and good, etc.…

STDU Converter helps you convert DjVu, TIFF, DCX and Comic Book Archive (CBR or CBZ) to PDF by two clicks. You need only select source file and choose location for destination file.
The program converts DjVu files to PDF format without increasing the output file size and extremally decreases size, then convert B/W files of other formats.
You can select only pages, which you need to convert. You can change resolution of converted pages, rotate some page and change brightness, contrast and gamma of any page. Additionally STDU Converter gives you possibility to remove color information from page (if you prepare documents for reading on device, like Amazon Kindle or Sony PRS).
If source document doesn't have contents tree, you can create your own content or edit existing.

It seem that calibre is more powerfull at the conversion, more possibilities

It seem that STDU is the best one….

Thanks a lot Horus…..for HELPING... it's appreciated

[Horus68]

I would never convert a CBR or CBZ to any format... a dedicated software will give you better results and functionality when reading. Specially on mobile!

For desktop I use:

CDisplay Ex http://www.cdisplayex.com/

If I have a PDF file with a graphic novel I do make them into CBZ: batch export all pages into JPG and zip.
Note: I do prefer single page comics with no blank margin... so sometimes I have to cut trim/cut the images with

 CBZ MAKER TOOL - https://falsinsoft-software.blogspot.com/