MobileRead Forums - View Single Post - Limit the number of batch download metadata in one go

Rellwood · 08-18-2026, 09:57 PM

(Initally posted in Plugins by mistake - I didn't realize I was on that forum)

I did submit a bug report, but I figured it could be metioned here.

I think it's time that Calibre impletmented a limit on the number of books that can be queued up to bactch download metadata and covers in one go.

Calibre use has been growing and people onboarding libraries and those who want to get new tags or whatever new metadata they can get with the new source plugins are loading up hundreds if not thousands of books to just churn through overnight with the expectation that it's going to have them waking up to all pristine metadata without any effort.

It's a problem when websites have been cutting access due to bots and scraping.

Im hoping that a limit on the number of books that can be queued up for a one click download is put in a new update. Im not trying to be some kind of police here,but Amazon is gone, Fantastic Fiction is gone, all these sites are using Cloudflare and WAF/Authentication to prevent automated access, yet Calibre still lets users select every book and download the metadata automatically - and doesn't stop the process even after the calls have been blocked. Users don't know that after so many books all they are doing is getting their ip's flagged and banned for continuing after each block.

Am I alone here or am I just being overly worried about future access to metadata sources?

08-18-2026, 09:57 PM	#2
Rellwood Library Breeder (She/Her) Posts: 1,352 Karma: 1977877 Join Date: Apr 2015 Location: California Device: Paperwhite 2015 (2), PW 2024 (12 GEN), PW 2023 (11 GEN), Scribe (1st)	Limiting one-click batch download metadata (Initally posted in Plugins by mistake - I didn't realize I was on that forum) I did submit a bug report, but I figured it could be metioned here. I think it's time that Calibre impletmented a limit on the number of books that can be queued up to bactch download metadata and covers in one go. Calibre use has been growing and people onboarding libraries and those who want to get new tags or whatever new metadata they can get with the new source plugins are loading up hundreds if not thousands of books to just churn through overnight with the expectation that it's going to have them waking up to all pristine metadata without any effort. It's a problem when websites have been cutting access due to bots and scraping. Im hoping that a limit on the number of books that can be queued up for a one click download is put in a new update. Im not trying to be some kind of police here,but Amazon is gone, Fantastic Fiction is gone, all these sites are using Cloudflare and WAF/Authentication to prevent automated access, yet Calibre still lets users select every book and download the metadata automatically - and doesn't stop the process even after the calls have been blocked. Users don't know that after so many books all they are doing is getting their ip's flagged and banned for continuing after each block. Am I alone here or am I just being overly worried about future access to metadata sources?