Find Duplicate Books by URL

[pavanag...@gmail.com]

Hi, I know this isn't stricly a FFF question but is there a way to find duplicate URLs? I mergd 2 libraries together and now there are a lot of duplicates floating around. 

I tried the plugin but its filtering them by names( of which there are a lot). Not letting me sort by date either so I could handle the recent ones.

Thanks in advance!

[Jim Miller]

This list is more for FFF's CLI users.

I think you'd have better luck asking in the Calibre FFF Plugin thread or even better, the Calibre Library Management subforum.

[Matěj Cepl]

On Sat Nov 1, 2025 at 3:23 PM CET, pavanag...@gmail.com wrote:
> Hi, I know this isn't stricly a FFF question but is there a way to find
> duplicate URLs? I mergd 2 libraries together and now there are a lot of
> duplicates floating around.

I have few Python/shell scripts in
https://git.sr.ht/~mcepl/epubgrep. Using epub_meta [1] library
it is really easy to wipe up simple scripts dealing with EPub
metadata.

knih_dedup is my attempt for the deduplication script, but it is
exactly wrong like you suggest such script should not be written
(it uses names, not URLs). epub_get_URL.py could be what you are
after.

Best,

Matěj

[1] https://pypi.org/project/epub_meta/
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