The image is of poor quality, the best quality can be obtained by changing (or removing) the attribute "size=300" in the link the simplest regex can do it. According to this rule https://instantview.telegram.org/checklist#6-2-1-image-quality , images should be of better quality. Such images are found not only in this article, images have this attribute standing at the side of the text. For example: https://www.newsko.ru/news/nk-4929720.html, https://www.newsko.ru/articles/nk-4944250.html and others.