OPAC

Online public access catalog - library catalog on the web. Article “OPAC” in Japanese Wikipedia has 32.2 points for quality (as of July 1, 2026). The article contains 50 references and 8 sections.

This article has the best quality in Catalan Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “OPAC”, its content was written by 24 registered users of Japanese Wikipedia and edited by 581 registered Wikipedia users in all languages.

The article is cited 121 times in Japanese Wikipedia and cited 1369 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #6950 in April 2004
• Global: #9924 in April 2004

The highest popularity rank from 2008:

• Local (Japanese): #64998 in May 2014
• Global: #60099 in April 2009

There are 28 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Catalan (ca) Catàleg d'accés públic en línia		38.5225
2	Basque (eu) Online public access catalog		33.183
3	Japanese (ja) OPAC		32.2109
4	Hungarian (hu) OPAC (Online Public Access Catalog)		29.8111
5	Indonesian (id) Katalog akses daring perpustakaan		29.4026
6	English (en) Online public access catalog		27.28
7	Czech (cs) OPAC		24.7481
8	Portuguese (pt) Catálogo de acesso público online		24.0178
9	Greek (el) Δημόσιος διαδικτυακός κατάλογος ανοιχτής πρόσβασης		21.56
10	Polish (pl) Online Public Access Catalog		21.1597

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "OPAC" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Online public access catalog		1 576 315
2	Japanese (ja) OPAC		366 889
3	German (de) OPAC		231 382
4	Spanish (es) Catálogo en línea		208 558
5	Italian (it) OPAC		190 590
6	Russian (ru) Электронный библиотечный каталог		136 538
7	French (fr) Online public access catalog		84 361
8	Polish (pl) Online Public Access Catalog		70 981
9	Thai (th) โอแพ็ก		66 087
10	Indonesian (id) Katalog akses daring perpustakaan		63 470

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "OPAC" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Online public access catalog		1 218
2	German (de) OPAC		478
3	Japanese (ja) OPAC		390
4	Italian (it) OPAC		195
5	Chinese (zh) OPAC		161
6	French (fr) Online public access catalog		134
7	Russian (ru) Электронный библиотечный каталог		98
8	Spanish (es) Catálogo en línea		68
9	Polish (pl) Online Public Access Catalog		35
10	Czech (cs) OPAC		34

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "OPAC" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Online public access catalog		153
2	Italian (it) OPAC		79
3	Spanish (es) Catálogo en línea		36
4	German (de) OPAC		33
5	French (fr) Online public access catalog		32
6	Dutch (nl) OPAC		28
7	Japanese (ja) OPAC		24
8	Polish (pl) Online Public Access Catalog		24
9	Hebrew (he) קטלוג ציבורי מקוון		23
10	Czech (cs) OPAC		19

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "OPAC" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Catalan (ca) Catàleg d'accés públic en línia		1
2	Czech (cs) OPAC		1
3	Basque (eu) Online public access catalog		1
4	Chinese (zh) OPAC		1
5	Belarusian (be) Электронны каталог		0
6	German (de) OPAC		0
7	Greek (el) Δημόσιος διαδικτυακός κατάλογος ανοιχτής πρόσβασης		0
8	English (en) Online public access catalog		0
9	Spanish (es) Catálogo en línea		0
10	Persian (fa) فهرست برخط دسترسی همگانی		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "OPAC" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	German (de) OPAC		387
2	English (en) Online public access catalog		296
3	Italian (it) OPAC		149
4	Japanese (ja) OPAC		121
5	French (fr) Online public access catalog		81
6	Spanish (es) Catálogo en línea		58
7	Russian (ru) Электронный библиотечный каталог		41
8	Korean (ko) 온라인 퍼블릭 액세스 카탈로그		30
9	Swedish (sv) Online Public Access Catalog		28
10	Hebrew (he) קטלוג ציבורי מקוון		27

More...

#	Language	Value
be	Belarusian Электронны каталог
ca	Catalan Catàleg d'accés públic en línia
cs	Czech OPAC
de	German OPAC
el	Greek Δημόσιος διαδικτυακός κατάλογος ανοιχτής πρόσβασης
en	English Online public access catalog
es	Spanish Catálogo en línea
eu	Basque Online public access catalog
fa	Persian فهرست برخط دسترسی همگانی
fr	French Online public access catalog
he	Hebrew קטלוג ציבורי מקוון
hr	Croatian OPAC
hu	Hungarian OPAC (Online Public Access Catalog)
id	Indonesian Katalog akses daring perpustakaan
it	Italian OPAC
ja	Japanese OPAC
ko	Korean 온라인 퍼블릭 액세스 카탈로그
ms	Malay OPAC
nl	Dutch OPAC
pl	Polish Online Public Access Catalog
pt	Portuguese Catálogo de acesso público online
ru	Russian Электронный библиотечный каталог
sk	Slovak Online katalóg knižnice
sv	Swedish Online Public Access Catalog
th	Thai โอแพ็ก
tr	Turkish Çevrimiçi genel erişim kataloğu
uk	Ukrainian OPAC
zh	Chinese OPAC

Best Rank

Japanese: #64998 05.2014

Global: #60099 04.2009

Best Rank

Japanese: #6950 04.2004

Global: #9924 04.2004

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information