ADDED: Open-graph image alt properties

src/minshell.html

@@ -16,6 +16,7 @@
     <meta property="og:title" content="raylib web game">
     <meta property="og:image:type" content="image/png">
     <meta property="og:image" content="https://www.raylib.com/common/raylib_logo.png">
+    <meta property="og:image:alt" content="New raylib web videogame, developed using raylib videogames library" />
     <meta property="og:site_name" content="raylib - example">
     <meta property="og:url" content="https://www.raylib.com/games.html">
     <meta property="og:description" content="New raylib web videogame, developed using raylib videogames library">
@@ -25,6 +26,7 @@
     <meta name="twitter:site" content="@raysan5">
     <meta name="twitter:title" content="raylib web game">
     <meta name="twitter:image" content="https://www.raylib.com/common/raylib_logo.png">
+    <meta name="twitter:image:alt" content="New raylib web videogame, developed using raylib videogames library">
     <meta name="twitter:url" content="https://www.raylib.com/games.html">
     <meta name="twitter:description" content="New raylib web videogame, developed using raylib videogames library">
 

src/shell.html

@@ -15,6 +15,7 @@
     <meta property="og:type" content="website" />
     <meta property="og:title" content="raylib web game">
     <meta property="og:image:type" content="image/png">
+    <meta property="og:image:alt" content="New raylib web videogame, developed using raylib videogames library" />
     <meta property="og:image" content="https://www.raylib.com/common/raylib_logo.png">
     <meta property="og:site_name" content="raylib - example">
     <meta property="og:url" content="https://www.raylib.com/games.html">
@@ -25,6 +26,7 @@
     <meta name="twitter:site" content="@raysan5">
     <meta name="twitter:title" content="raylib web game">
     <meta name="twitter:image" content="https://www.raylib.com/common/raylib_logo.png">
+    <meta name="twitter:image:alt" content="New raylib web videogame, developed using raylib videogames library">
     <meta name="twitter:url" content="https://www.raylib.com/games.html">
     <meta name="twitter:description" content="New raylib web videogame, developed using raylib videogames library">