diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fc5760ff8..7721a3434 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -45,6 +45,11 @@ Here's what you can do to help:
 - Be sure to run `npm run test`. It is going to run all tests for all snippets.
 - Make a new pull request **only if all the tests are passing**.
 
+#### Browser specific tests
+- If your snippet belongs to `browser` category then you will need to modify the tests to make them work.
+- By default, `NodeJS` isn't browser environment. That said we have to use external package to help us simulate the browser for our tests.
+- We use [jsdom](https://www.npmjs.com/package/jsdom) for our browser specific tests. You can find their [documentation](https://github.com/jsdom/jsdom) on GitHub as well.
+
 
 
 ### Additional guidelines and conventions regarding snippets