diff --git a/README.md b/README.md
index 63e969e5..de0be36c 100644
--- a/README.md
+++ b/README.md
@@ -600,6 +600,7 @@ Table of Contents
   * [screenshotmachine.com](https://screenshotmachine.com/) — Capture 100 snapshots/month, png, gif and jpg, including full-length captures, not only home page
   * [readme.io](https://readme.io/) — Beautiful documentations made easy, free for Open Source
   * [formaholic.com](https://formaholic.com) — Simple form endpoint. Perfect for static sites
+  * [http2.pro](https://http2.pro) — HTTP/2 protocol readiness test and client HTTP/2 support detection API.
 
 ## APIs, Data and ML