The legality of web data extraction always depends on the method and type of data being collected. Website data extraction must be conducted in compliance with relevant laws and regulations, including copyright and privacy laws, among others, to avoid any violations. Also, it must be done responsibly and ethically so that it does not affect the performance of a website and is not violating any other terms of use. To learn more about this, visit Wikimedia’s official ToS and other pages on robot policy and User-Agent policy.
As in any case that involves web scraping sites, it is highly recommended to consult a legal expert before engaging in any data extraction activities. If you are curious to learn more about this topic, check out our in-depth blog post about the legality of web scraping.