diff --git a/README.md b/README.md
index da23242..875649d 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,14 @@ flowchart TB
     conf & html([HTML snipet]) & js([JS snipet]) & css([CSS snipet]) -- use / import into --> webpage([Your web page])
 ```
 
+## Limitations
+
+The following limitations are known and will be improved upon :
+
++ Mobile support is currently limited
++ There are some performences issues
++ Your comic pages need to be the same size
+
 # How to setup Melpomene ?
 
 ## Defining the zooms
@@ -72,6 +80,7 @@ You now need :
     1. `melpomene_head.html` goes in the `head` tag of your page
         * You may need to change the `href` values to where you uploaded the CSS file.
     2. `melpomene_reader.html` goes where you want somewhere within the `body` tag of your page
+        * Change `data-pages-width` and `data-pages-height` with the actual width and height of your pages
         * Change `https://link.to.my/comic/page.jpg` to the actual URL of your comic pages and duplicate the `img`
         tag for each of them
     3. `melpomene_js.html` goes right after the `body` tag of your page.