Yandex, The Popular Russian Search Engine, Begins Crawling JavaScript & CSS

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Yandex, the large Russian search engine, announced (in Russian) that they are now crawling, as a test, through CSS and JavaScript files. The purpose is for Yandex to better understand web pages and the content on those web pages that are designed for more modern browsers. They are starting to test this crawl process on a small subset of known pages, but they plan to expand it later to a larger set of the index.

Because of this effort, Yandex is informing webmasters to make sure their CSS and JavaScript files are not blocking the Yandex crawler. In the same way, Google and Bing have recommended you do not block their bots from crawling your CSS and JavaScript files and resources.

The Russian Search blog summarized this also in English, since they speak fluent Russian, and I do not. They added, “this change in Yandex’s indexing routines can possibly have effects on Yandex SEO, at least in the long run.”

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