Formaldehyd

Quality:

Formaldehyde - chemical compound. Article "Formaldehyd" in Czech Wikipedia has 38.2 points for quality (as of July 1, 2025). The article contains 19 references and 9 sections.

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

Achievements in all the time:

Czech Wikipedia:

cs

The 2146^th most popular in Czech Wikipedia.

cs

The 9361^st most editable in Czech Wikipedia.

Global Wikipedia:

The 3812^th most popular in all topics.

The 8677^th most popular in AI.

Achievements in the last month:

Czech Wikipedia:

cs

The 6483^rd most popular in Czech Wikipedia in the last month.

cs

The 402^nd most editable in Czech Wikipedia in the last month.

In June 2025 the article "Formaldehyd" was edited by 4 authors in Czech Wikipedia (402^nd place) and written by 20 authors in all languages.

Since the creation of article "Formaldehyd", its content was written by 46 registered users of Czech Wikipedia (9361^st place) and edited by 2714 registered Wikipedia users in all languages (8677^th place).

The article is cited 225 times in Czech Wikipedia and cited 10238 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Czech): #402 in June 2025
• Global: #1902 in April 2003

The highest popularity rank from 2008:

• Local (Czech): #408 in September 2012
• Global: #628 in May 2012

There are 52 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, 2025 (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	German (de) Formaldehyd		100
2	Thai (th) ฟอร์มาลดีไฮด์		92.603
3	English (en) Formaldehyde		90.179
4	Serbian (sr) Формалдехид		87.7126
5	Greek (el) Φορμαλδεΰδη		80.1027
6	Ukrainian (uk) Формальдегід		78.7997
7	French (fr) Méthanal		72.9711
8	Chinese (zh) 甲醛		69.6064
9	Malay (ms) Formaldehid		65.7545
10	Catalan (ca) Formaldehid		63.3334

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

#	Language	Popularity award	Relative popularity
1	English (en) Formaldehyde		15 419 377
2	German (de) Formaldehyd		5 001 665
3	Spanish (es) Formaldehído		4 188 448
4	Russian (ru) Формальдегид		3 580 883
5	Japanese (ja) ホルムアルデヒド		3 515 904
6	Italian (it) Formaldeide		1 981 951
7	Chinese (zh) 甲醛		1 809 824
8	French (fr) Méthanal		1 718 686
9	Polish (pl) Aldehyd mrówkowy		1 146 522
10	Portuguese (pt) Metanal		1 121 856

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

#	Language	Popularity award	Relative popularity
1	English (en) Formaldehyde		32 823
2	German (de) Formaldehyd		8 406
3	Russian (ru) Формальдегид		7 886
4	Japanese (ja) ホルムアルデヒド		6 809
5	Chinese (zh) 甲醛		5 617
6	Vietnamese (vi) Formaldehyde		5 163
7	Spanish (es) Formaldehído		4 093
8	French (fr) Méthanal		3 154
9	Italian (it) Formaldeide		3 117
10	Dutch (nl) Formaldehyde		1 563

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

#	Language	AI award	Relative AI
1	English (en) Formaldehyde		640
2	German (de) Formaldehyd		342
3	French (fr) Méthanal		182
4	Chinese (zh) 甲醛		137
5	Russian (ru) Формальдегид		120
6	Spanish (es) Formaldehído		115
7	Dutch (nl) Formaldehyde		101
8	Italian (it) Formaldeide		95
9	Japanese (ja) ホルムアルデヒド		73
10	Hungarian (hu) Formaldehid		50

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

#	Language	AI award	Relative AI
1	Czech (cs) Formaldehyd		4
2	English (en) Formaldehyde		3
3	Chinese (zh) 甲醛		3
4	German (de) Formaldehyd		2
5	Catalan (ca) Formaldehid		1
6	Hindi (hi) फार्मल्डिहाइड		1
7	Japanese (ja) ホルムアルデヒド		1
8	Korean (ko) 폼알데하이드		1
9	Polish (pl) Aldehyd mrówkowy		1
10	Serbian (sr) Формалдехид		1

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

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In Czech Wikipedia the most popular articles on that day were: RSS, János Hunyadi, Margita Balaštíková, Alžběta Lucemburská, ISO 8859-2, Trosečník (film, 2000), Vladislav Jagellonský, Elton John, Jan Jakob, Jitka Molavcová.

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 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information