diff --git a/readme.md b/readme.md
index 91a20d2..528263a 100644
--- a/readme.md
+++ b/readme.md
@@ -82,7 +82,6 @@ if (src.match(/^(file|https)?:\/\/|^\/\//)) {
 * optionally add inverted versions of existing tiles if they are a better match
 * make new tiles out of fragments of existing tiles instead of directly copying from bitmap
 * allow user to zoom out so the image is letterboxed/windowboxed/etc.
-* break up rendering into separate preview and output modes (would be good to have a throttled preview for brightness slider adjustments and then a debounced tile render)
 * add 'invert' function
 * allow for image colour hack
 * make a tool for batch importing images?