diff --git a/README.md b/README.md
index acbb635..c59f2d4 100644
--- a/README.md
+++ b/README.md
@@ -15,13 +15,13 @@ web documents that include mathematics and be confident that users will be
 able to view it naturally and easily.  Simply include MathJax and some
 mathematics in a web page, and MathJax does the rest.
 
-See <http://www.mathjax.org/> or <https://github.com/mathjax/MathJax/> for additional details.
+See <https://www.mathjax.org/> or <https://github.com/mathjax/MathJax/> for additional details.
 
 
 ## Beautiful documentation.
 
 The MathJax installation and usage documentation is available in this repository. The documents are also
-available on the MathJax web site online at <http://docs.mathjax.org>.  Please help us improve the documentation!
+available on the MathJax web site online at <https://docs.mathjax.org>.  Please help us improve the documentation!
 You can use the editor feature on github to simplify this.
 
 ## Community
diff --git a/index.rst b/index.rst
index dac3930..0cad35c 100644
--- a/index.rst
+++ b/index.rst
@@ -120,12 +120,12 @@ need it.
 
 .. image:: https://img.shields.io/badge/powered%20by-NumFOCUS-orange.svg?style=flat&amp;colorA=E1523D&amp;colorB=007D8A
    :alt: powered-by NumFocus
-   :target: http://www.numfocus.org
+   :target: https://numfocus.org
 
 MathJax is a Sponsored Project of NumFOCUS, a 501(c)(3) nonprofit
 charity in the United States. NumFOCUS provides MathJax with fiscal,
 legal, and administrative support to help ensure the health and
-sustainability of the project. Visit `numfocus.org <http://www.numfocus.org>`__ for more
+sustainability of the project. Visit `numfocus.org <https://numfocus.org>`__ for more
 information.
 
 ------
diff --git a/web/webpack.rst b/web/webpack.rst
index cb01bcc..bbc99c1 100644
--- a/web/webpack.rst
+++ b/web/webpack.rst
@@ -573,7 +573,7 @@ not based on other MathJax components at all.  The following example
 shows how to make a custom build that provides a function for
 obtaining the speech string for a given TeX math string.  This example
 is similar to one in the `MathJax3 demos
-<https://github.com/mathjax/MathJax-demos-web/blob/master/custom-build/custom-mathjax.md>`__
+<https://github.com/mathjax/MathJax-demos-web/blob/master/custom-build/custom-mathjax.html.md>`__
 repository.
 
 After downloading a copy of MathJax as described in the section on