NeverTooManyBooks ships with connectors for more than eighteen external book data sources ranging from national library catalogues to regional comics shops. Each connector is an independent search engine that can be switched on or off, given a custom priority position, and further tuned through its own settings page. This reference documents every engine, what it covers, and anything special you need to know to get the best results from it.Documentation Index
Fetch the complete documentation index at: https://mintlify.com/tfonteyn/NeverTooManyBooks/llms.txt
Use this file to discover all available pages before exploring further.
Managing Site Settings
To reach the site list, open Settings → Search → Websites. From there you can:- Toggle a site on or off using the switch next to each row. Disabled sites are never queried.
- Reorder sites by dragging to set search priority. Sites higher in the list are queried first and their field values take precedence in the metadata merge (first non-empty value wins).
- Open a site’s own settings page by tapping the menu button (⋮) on any row. Site-specific settings include changing the default URL and, for sites that require a login, entering credentials.
Worldwide / General Catalogues
Google Books
Google Books
URL: books.google.com
Language: English and more
Type: CatalogueGoogle Books is the broadest general-purpose source and a reliable fallback for most modern ISBNs. It supports ISBN search, external ID search (Google Books volume ID), and free-text search.
Language: English and more
Type: CatalogueGoogle Books is the broadest general-purpose source and a reliable fallback for most modern ISBNs. It supports ISBN search, external ID search (Google Books volume ID), and free-text search.
OpenLibrary
OpenLibrary
URL: openlibrary.org
Language: English and more
Type: CatalogueThe Internet Archive’s Open Library holds records for millions of editions. It is particularly strong for older and out-of-print titles. Supports ISBN, external ID (Open Library edition key), and text searches.
Language: English and more
Type: CatalogueThe Internet Archive’s Open Library holds records for millions of editions. It is particularly strong for older and out-of-print titles. Supports ISBN, external ID (Open Library edition key), and text searches.
Goodreads
Goodreads
URL: goodreads.com
Language: English and more
Type: CatalogueGoodreads provides broad coverage of English-language titles plus strong community-contributed metadata such as series information and genre tags.
Language: English and more
Type: CatalogueGoodreads provides broad coverage of English-language titles plus strong community-contributed metadata such as series information and genre tags.
Amazon
Amazon
Domains: .com, .co.uk, .fr, .de, .nl, .com.be, .es
Language: Worldwide
Type: ShopAmazon stores are configured individually — you can enable the domains relevant to your region and disable the rest. Each domain is a separate engine entry in the site list.
Language: Worldwide
Type: ShopAmazon stores are configured individually — you can enable the domains relevant to your region and disable the rest. Each domain is a separate engine entry in the site list.
ISFDB
ISFDB
URL: isfdb.org
Language: English and more
Type: Catalogue — Fantasy and Science FictionThe Internet Speculative Fiction Database is the authoritative source for SF/F/H titles. It has deep coverage of short fiction, anthologies, and publication history that no general catalogue matches. Supports ISBN, external ID (ISFDB title and publication IDs), and text searches.
Language: English and more
Type: Catalogue — Fantasy and Science FictionThe Internet Speculative Fiction Database is the authoritative source for SF/F/H titles. It has deep coverage of short fiction, anthologies, and publication history that no general catalogue matches. Supports ISBN, external ID (ISFDB title and publication IDs), and text searches.
Wikidata
Wikidata
URL: wikidata.org
Language: Multilingual
Type: CatalogueWikidata provides structured, linked data for books and authors. Useful as a supplementary source for author details and identifier cross-references.
Language: Multilingual
Type: CatalogueWikidata provides structured, linked data for books and authors. Useful as a supplementary source for author details and identifier cross-references.
European Comics Catalogues and Shops
Bedetheque
Bedetheque
URL: bedetheque.com
Language: French and more
Type: Catalogue — European ComicsThe most comprehensive French-language comics database, covering BD (bande dessinée) albums, series, authors, and illustrators. Bedetheque requires you to create a free account on the site. Enter your username and password in Settings → Search → Websites → Bedetheque → ⋮ → Settings.
Language: French and more
Type: Catalogue — European ComicsThe most comprehensive French-language comics database, covering BD (bande dessinée) albums, series, authors, and illustrators. Bedetheque requires you to create a free account on the site. Enter your username and password in Settings → Search → Websites → Bedetheque → ⋮ → Settings.
StripInfo
StripInfo
URL: stripinfo.be
Language: Dutch and more
Type: Catalogue — European ComicsBelgian comics catalogue (strips) with strong Dutch and French-language holdings. Supports ISBN, external ID, and text search.
Language: Dutch and more
Type: Catalogue — European ComicsBelgian comics catalogue (strips) with strong Dutch and French-language holdings. Supports ISBN, external ID, and text search.
StripWeb
StripWeb
URL: stripweb.be
Language: Dutch / French
Type: Shop — European ComicsBelgian comics shop. Useful for finding current pricing and availability alongside metadata.
Language: Dutch / French
Type: Shop — European ComicsBelgian comics shop. Useful for finding current pricing and availability alongside metadata.
LastDodo
LastDodo
URL: lastdodo.nl
Language: Dutch and more
Type: Catalogue — European ComicsDutch platform specialising in collectibles including comics. Good source for Dutch-language strip metadata.
Language: Dutch and more
Type: Catalogue — European ComicsDutch platform specialising in collectibles including comics. Good source for Dutch-language strip metadata.
Language-Specific Sources
BnF.fr — Bibliothèque nationale de France
BnF.fr — Bibliothèque nationale de France
URL: bnf.fr
Language: French
Type: National Library CatalogueThe French National Library catalogue. Authoritative for French-language publications. Supports ISBN and text search.
Language: French
Type: National Library CatalogueThe French National Library catalogue. Authoritative for French-language publications. Supports ISBN and text search.
DNB — Deutsche Nationalbibliothek
DNB — Deutsche Nationalbibliothek
URL: dnb.de / katalog.dnb.de
Language: German
Type: National Library CatalogueGermany’s National Library. Excellent coverage of German-language titles. When enabled in the site settings, DNB can return high-resolution cover images via the MVB portal, which can significantly improve cover quality compared to other sources.
Language: German
Type: National Library CatalogueGermany’s National Library. Excellent coverage of German-language titles. When enabled in the site settings, DNB can return high-resolution cover images via the MVB portal, which can significantly improve cover quality compared to other sources.
KB.NL — Koninklijke Bibliotheek
KB.NL — Koninklijke Bibliotheek
URL: kb.nl
Language: Dutch and more
Type: National Library CatalogueThe Royal Library of the Netherlands. Strong coverage of Dutch-language and multilingual titles.
Language: Dutch and more
Type: National Library CatalogueThe Royal Library of the Netherlands. Strong coverage of Dutch-language and multilingual titles.
BOL.com
BOL.com
URL: bol.com
Language: Dutch and more
Type: ShopThe main Dutch-language online retailer. Useful for cover images and metadata on recent Dutch and Flemish publications.
Language: Dutch and more
Type: ShopThe main Dutch-language online retailer. Useful for cover images and metadata on recent Dutch and Flemish publications.
Bertrand.pt
Bertrand.pt
URL: bertrand.pt
Language: Portuguese and more
Type: ShopPortugal’s major bookshop chain. Good source for Portuguese-language metadata and cover images.
Language: Portuguese and more
Type: ShopPortugal’s major bookshop chain. Good source for Portuguese-language metadata and cover images.
Biblionet.gr
Biblionet.gr
URL: biblionet.gr
Language: Greek
Type: CatalogueThe main Greek book database. Covers Greek-language titles from Greek publishers.
Language: Greek
Type: CatalogueThe main Greek book database. Covers Greek-language titles from Greek publishers.
Bibliotece.pl
Bibliotece.pl
URL: bibliotece.pl
Language: Polish
Type: CataloguePolish library catalogue with broad coverage of Polish-language books.
Language: Polish
Type: CataloguePolish library catalogue with broad coverage of Polish-language books.
databazeknih.cz
databazeknih.cz
URL: databazeknih.cz
Language: Czech and more
Type: CatalogueCzech and Slovak book database. Community-maintained catalogue with good coverage of Central European titles.
Language: Czech and more
Type: CatalogueCzech and Slovak book database. Community-maintained catalogue with good coverage of Central European titles.
Douban.com
Douban.com
URL: douban.com
Language: Chinese
Type: CatalogueThe leading Chinese book catalogue. Essential for Chinese-language titles where no other engine provides meaningful coverage.
Language: Chinese
Type: CatalogueThe leading Chinese book catalogue. Essential for Chinese-language titles where no other engine provides meaningful coverage.
Engine Capabilities Reference
Each engine implements one or more search interfaces. The table below shows which search modes each category of engine typically supports.| Search Mode | How it’s triggered | Typical engine support |
|---|---|---|
| By ISBN / Barcode | Scan or type a numeric ISBN | Nearly all engines |
| By External ID | Site-specific numeric or string ID | Selected engines (Goodreads ID, ISFDB ID, DNB ID, etc.) |
| By Text | Title, author, or keyword | Most general catalogues and shops |
| Cover by Edition | Cover Browser alternative editions | Engines that implement the CoverByEdition interface |