Thread: Viewer slow first read and what are the shortcuts
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Old 10-20-2019, 04:14 AM   #11
kovidgoyal
creator of calibre
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first check the staartup time of the viewer alone without any book. Then run

calibre-debug -w file.epub

which will print out the amount of time it took to prepare the book.

And sure see the linux download page for how to install isolated calibre installs as well as installing previous versions.
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