Contact Form 7 is a widely used free form plugin for WordPress.
About 596,855 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is Contact Form 7 detected?
Every rendered form carries the class wpcf7-form. 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 Contact Form 7
Top 50 websites using Contact Form 7
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 2026-10-09 06:16:50 UTC.
How does PageSourceSearch know a website uses Contact Form 7?
By the source itself: Every rendered form carries the class wpcf7-form. 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 Contact Form 7?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 596,855 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 Contact Form 7 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 wpcf7-form with wp-content/plugins/ lists the WordPress sites that use Contact Form 7.