Is Library Extension safe?
Library Extension sends book and catalog search details from supported pages to api.libraryextension.com.
When you configure a library and visit a supported book or catalog page, Library Extension builds search records that can include title, author, ISBN, page details, and catalog request data. For catalogs that use its proxy, it sends request method, URL, body, headers, library ID, and catalog ID to api.libraryextension.com, then polls the same service for results.
Who publishes itQuotidian LLC - no other listings under this identity, 3 shared hostnames
Quotidian LLC - no other listings under this identity, 3 shared hostnames
What this publisher told the store about itself, and the other listings that told it the same thing.
Shared hosts - 3 hostnames
Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
Publishers can request a review.
What it can do
Permissions this extension asks for, as declared in version 2026.810.1. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.
Read and change your data on every site you visit
http://*/*
Read and change your data on every secure site you visit
https://*/*
Run its own code inside the pages you visit
scripting
See the address and title of every tab you have open
tabs
Where it sends data
Destinations our analysis observed Library Extension contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.
- api.libraryextension.com
Library Extension sends data to api.libraryextension.com. No other extension we have analysed sends data here.