diff --git a/readme.md b/readme.md
index b499e06..f5bcbf8 100644
--- a/readme.md
+++ b/readme.md
@@ -44,6 +44,7 @@ if (src.match(/^(file|https)?:\/\/|^\/\//)) {
 
 * does not work on ipad (can't scroll to the right?)
     * possibly fixed; needs testing
+* create tiles slider breaks onto 2 lines in some browsers?
 
 ## to do
 
@@ -57,6 +58,8 @@ if (src.match(/^(file|https)?:\/\/|^\/\//)) {
 * add up/down arrows to the brightness slider for incremental tweaks
 * add 'all-white' tile by default in case the game data doesn't have it?
 * handle arbitrary animation frames (editor only supports 2 frames, but game data has no upper limit)
+* list how many new tiles are being created
+* combine preview and output
 
 ## could do