diff --git a/README.md b/README.md
index b417684..cb01a4e 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ A browser-in-browser "proxy" server that allows to use historical / vintage web
 6. Do not use client browser history-back, instead use **Bk** button in the app.
 7. To send keystrokes, fill **K** input box and press **Go**. There also are buttons for backspace, enter and arrow keys.
 8. Experimentally you can set height **H** to `0` to render pages in to one tall image without the vertical scrollbar. Note it will be large, slow to process, download and display on client browser.
-9. Generally if the client browser supports PNG you should use it instead of GIF. PNG is much faster, GIF Requires a lot of processing time on both server/client for encoding/decoding, compress/decompress, color palette optimizations and so on.
+9. Prefer PNG over GIF if your browser supports it. PNG is much faster, whereas GIF requires a lot of additional processing on both client and server.
 
 ## Docker