mdBook creates online books from Markdown, used for the Rust books and many project guides.
About 823 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is mdBook detected?
mdBook prints a comment Book generated using mdBook at the top of every page. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:
A literal is matched byte for byte, case-sensitively. Combine it with another keyword, a domain, a kind or a date filter on the search page to narrow the list. About mdBook
Top 50 websites using mdBook
Ranked by the domain's position in the crawl's ranked list (Common Crawl harmonic centrality), highest first. view source opens the stored page or script with the match highlighted. Computed 2026-09-30 19:04:55 UTC.
RTD.org\n\nTo support sphinx_rtd_theme, a `wy-menu` element is added. Other themes are\ntargeted using the theme identifier and use custom elements instead of a CSS\nframework html structure.\n\n*/\n\
How does PageSourceSearch know a website uses mdBook?
By the source itself: mdBook prints a comment Book generated using mdBook at the top of every page. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.
Is this a complete list of websites using mdBook?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 823 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.
How do I find websites that use mdBook together with another technology?
Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example Book generated using mdBook with wp-content/plugins/ lists the WordPress sites that use mdBook.