diff --git a/src/runtime/javascript/Dockerfile b/src/runtime/javascript/Dockerfile
index 13d37dc23..62378d73d 100644
--- a/src/runtime/javascript/Dockerfile
+++ b/src/runtime/javascript/Dockerfile
@@ -41,6 +41,7 @@ RUN emcc .libs/libgu.a .libs/libpgf.a -o pgf.js \
         ccall,\
         FS,\
         getValue,\
+        AsciiToString,\
         stringToUTF8,\
         UTF8ToString,\
         allocateUTF8\
diff --git a/src/runtime/javascript/test-web.js b/src/runtime/javascript/test-web.js
index 83b72ca41..2e4d3e87f 100644
--- a/src/runtime/javascript/test-web.js
+++ b/src/runtime/javascript/test-web.js
@@ -1,6 +1,19 @@
 Module.onRuntimeInitialized = () => {
     const JSPGF = mkAPI(Module);
 
+    fetch('Foods.pgf')
+      .then((response) => response.arrayBuffer())
+      .then((data) => {
+        const pgfPathFS = '/tmp/Foods.pgf';
+        Module.FS.writeFile(pgfPathFS, new DataView(data));
+
+        // Read PGF
+        const pgf = JSPGF.readPGF(pgfPathFS);
+
+        // Print its name
+        console.log(JSPGF.abstractName(pgf));
+      })
+    
     // Parse expression
     const expr = JSPGF.readExpr("Pred (Another (x f))");