diff --git a/README.md b/README.md
index 23d38f7..391353a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,8 @@
 # glvisjs-releases
-Archive of glvis-js releases
+
+
+`pyglvis` uses `esm.sh` as a CDN for `glvis-js`.
+`glvis-js` builds are stored in its [repo](https://github.com/GLVis/glvis-js), but are tracked using `git-lfs`, which `esm.sh` has trouble with.
+
+
+This repo serves as an archive of glvis-js releases similar to [glvis/releases](https://github.com/GLVis/releases), and also a non-lfs location for `pyglvis` to point to.