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-# PDF.js [![CI](https://github.com/mozilla/pdf.js/actions/workflows/ci.yml/badge.svg?query=branch%3Amaster)](https://github.com/mozilla/pdf.js/actions/workflows/ci.yml?query=branch%3Amaster)
+# PDF.js [![CI](https://github.com/mozilla/pdf.js/actions/workflows/ci.yml/badge.svg?query=branch%3Amaster)](https://github.com/mozilla/pdf.js/actions/workflows/ci.yml?query=branch%3Amaster) [![codecov](https://codecov.io/gh/mozilla/pdf.js/branch/master/graph/badge.svg)](https://codecov.io/gh/mozilla/pdf.js)
 
 [PDF.js](https://mozilla.github.io/pdf.js/) is a Portable Document Format (PDF) viewer that is built with HTML5.