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Old 01-17-2026, 11:57 AM   #3
theducks
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Location: The Central Coast of California
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Quote:
Originally Posted by cga1982 View Post
Is there a more efficient way of editing book titles than going through each book individually?
For example, I want to change the month in the book title to a short form (so that instead of December it shows Dec).
I know that I can use the Search and Replace (if I had many, many Decembers to change but usually there are less than 10 books for each moth to change.)
Thank-you.
RULE #1 for Calibre. NEVER EVER use the OS to change a file or folder name in a Calibre Library. What is in the GUI (database), MUST stay in lockstep with the Library files and folders. Only Calibre knows where it put a file.

I take your question on is really: 'How to format column values'
For dates (in date type columns):
Preferences: Tweaks: take a moment and read the descriptions of each. There are some others you might want to use

ID: gui_pubdate_display_format
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BTW before you start: backup tweaks,py found in:
C:\Users\<user name>\AppData\Roaming\calibre
Just in case...

for more formatting, like Alignment: right click the column heading in the main GUI.
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