Backward compatibility

Backward compatibility - property of a system, product, or technology that allows for interoperability with an older legacy system, or with input designed for such a system, especially in telecommunications and computing. Article “Backward compatibility” in English Wikipedia has 37.1 points for quality (as of July 1, 2026). The article contains 25 references and 9 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 1.95 points.

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

In June 2026 the article “Backward compatibility” was edited by 4 authors in English Wikipedia and written by 6 authors in all languages.

Since the creation of article “Backward compatibility”, its content was written by 328 registered users of English Wikipedia and edited by 729 registered Wikipedia users in all languages.

The article is cited 1192 times in English Wikipedia and cited 3672 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #1868 in October 2001
• Global: #2124 in October 2001

The highest popularity rank from 2008:

• Local (English): #31969 in December 2008
• Global: #47082 in December 2008

There are 31 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	Estonian (et) Tagasiühilduvus		62.0199
2	Catalan (ca) Retrocompatibilitat		48.09
3	English (en) Backward compatibility		37.0501
4	Korean (ko) 하위 호환성		32.4736
5	Vietnamese (vi) Khả năng tương thích ngược		31.9377
6	Portuguese (pt) Compatibilidade reversa		24.8189
7	Hebrew (he) תאימות לאחור		23.2176
8	Esperanto (eo) Retrokongruo		22.8327
9	Lithuanian (lt) Atgalinis suderinamumas		22.3448
10	Arabic (ar) توافقية رجعية		22.117

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

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

#	Language	Popularity award	Relative popularity
1	English (en) Backward compatibility		2 903 855
2	French (fr) Compatibilité ascendante et descendante		184 063
3	Russian (ru) Обратная совместимость		150 985
4	Spanish (es) Retrocompatibilidad		138 044
5	Chinese (zh) 向下兼容		111 638
6	Polish (pl) Kompatybilność wsteczna		89 718
7	Korean (ko) 하위 호환성		86 639
8	Dutch (nl) Achterwaartse compatibiliteit		59 199
9	Italian (it) Retrocompatibilità		54 469
10	Portuguese (pt) Compatibilidade reversa		52 336

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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 "Backward compatibility" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Backward compatibility		5 137
2	Chinese (zh) 向下兼容		347
3	French (fr) Compatibilité ascendante et descendante		290
4	Russian (ru) Обратная совместимость		203
5	Spanish (es) Retrocompatibilidad		178
6	Persian (fa) سازگاری عقبرو		118
7	Polish (pl) Kompatybilność wsteczna		86
8	Portuguese (pt) Compatibilidade reversa		79
9	Italian (it) Retrocompatibilità		78
10	Korean (ko) 하위 호환성		49

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

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

#	Language	AI award	Relative AI
1	English (en) Backward compatibility		328
2	French (fr) Compatibilité ascendante et descendante		56
3	Russian (ru) Обратная совместимость		37
4	Italian (it) Retrocompatibilità		34
5	Chinese (zh) 向下兼容		34
6	Dutch (nl) Achterwaartse compatibiliteit		30
7	Spanish (es) Retrocompatibilidad		29
8	Polish (pl) Kompatybilność wsteczna		22
9	Swedish (sv) Bakåtkompatibilitet		20
10	Persian (fa) سازگاری عقبرو		16

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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 "Backward compatibility" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) Backward compatibility		4
2	Arabic (ar) توافقية رجعية		1
3	Catalan (ca) Retrocompatibilitat		1
4	Azerbaijani (az) Geriyə uyumlu		0
5	Czech (cs) Zpětná kompatibilita		0
6	Esperanto (eo) Retrokongruo		0
7	Spanish (es) Retrocompatibilidad		0
8	Estonian (et) Tagasiühilduvus		0
9	Persian (fa) سازگاری عقبرو		0
10	Finnish (fi) Taaksepäin suuntautuva yhteensopivuus		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 "Backward compatibility" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Backward compatibility		1 192
2	Korean (ko) 하위 호환성		265
3	Portuguese (pt) Compatibilidade reversa		220
4	Czech (cs) Zpětná kompatibilita		201
5	Chinese (zh) 向下兼容		187
6	French (fr) Compatibilité ascendante et descendante		176
7	Russian (ru) Обратная совместимость		164
8	Italian (it) Retrocompatibilità		146
9	Spanish (es) Retrocompatibilidad		141
10	Polish (pl) Kompatybilność wsteczna		141

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#	Language	Value
ar	Arabic توافقية رجعية
az	Azerbaijani Geriyə uyumlu
ca	Catalan Retrocompatibilitat
cs	Czech Zpětná kompatibilita
en	English Backward compatibility
eo	Esperanto Retrokongruo
es	Spanish Retrocompatibilidad
et	Estonian Tagasiühilduvus
fa	Persian سازگاری عقبرو
fi	Finnish Taaksepäin suuntautuva yhteensopivuus
fr	French Compatibilité ascendante et descendante
he	Hebrew תאימות לאחור
it	Italian Retrocompatibilità
kk	Kazakh Кері үйлесімділік
ko	Korean 하위 호환성
lt	Lithuanian Atgalinis suderinamumas
nl	Dutch Achterwaartse compatibiliteit
no	Norwegian Bakoverkompatibilitet
pl	Polish Kompatybilność wsteczna
pt	Portuguese Compatibilidade reversa
ro	Romanian Compatibilitate inversă
ru	Russian Обратная совместимость
simple	Simple English Backward compatibility
sk	Slovak Spätná kompatibilita
sv	Swedish Bakåtkompatibilitet
th	Thai ความเข้ากันได้ย้อนหลัง
tr	Turkish Geriye uyumluluk
uk	Ukrainian Зворотна сумісність
ur	Urdu عقبی مطابقت
vi	Vietnamese Khả năng tương thích ngược
zh	Chinese 向下兼容

Best Rank

English: #31969 12.2008

Global: #47082 12.2008

Best Rank

English: #1868 10.2001

Global: #2124 10.2001

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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