diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -4864,3 +4864,4 @@ Run Lighthouse on an emulated mobile device on a 3G network. Running the test wi
 * [BonPatron](http://bonpatron.com/) - [FR] :fr: online spelling and grammar checker for french texts / correcteur d'orthographe et de grammaire en ligne pour les textes français
 * [Tone Analyzer](https://tone-analyzer-demo.ng.bluemix.net/) - This service uses linguistic analysis to detect joy, fear, sadness, anger, analytical, confident and tentative tones found in text.
 * [Repetition Detector](http://www.repetition-detector.com/?p=online) - Intelligent and user-friendly detection of repetitions
+* [Readable](https://www.webfx.com/tools/read-able/) - Free readability test tool | Quick and easy way to test the readability of your work (text).