diff --git a/.gitignore b/.gitignore
index d06d069a5..f20eb9430 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@ _deps
 Brewfile.lock.json
 .DS_Store
 .cache
+/bindings/*/build
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 37f1c9480..2ad329d18 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,6 +77,7 @@ endif()
 
 if(PROJECT_IS_TOP_LEVEL)
   noa_target_clang_format(SOURCES
+    bindings/*.cc
     src/*.h src/*.cc
     benchmark/*.h benchmark/*.cc
     test/*.h test/*.cc)
diff --git a/bindings/webassembly/Makefile b/bindings/webassembly/Makefile
new file mode 100644
index 000000000..1bd85dc1d
--- /dev/null
+++ b/bindings/webassembly/Makefile
@@ -0,0 +1,26 @@
+EMCC = emcc
+MKDIR = mkdir
+NODE = node
+
+CXX_FLAGS = -O3 -std=c++20 -flto
+
+all: compile test
+compile: build/jsontoolkit.js .always
+test: test.js .always
+	$(NODE) $<
+
+build:
+	$(MKDIR) $@
+build/json: | build
+	$(MKDIR) $@
+
+build/json/%.o: ../../src/json/%.cc | build/json
+	$(EMCC) $(CXX_FLAGS) -o $@ $< -I../../src/json/include -c
+
+build/jsontoolkit.js: module.cc build/json/json.o build/json/json_value.o | build
+	$(EMCC) $(CXX_FLAGS) -o $@ $^ -I../../src/json/include -lembind \
+		-s EVAL_CTORS=2 -s EXPORT_NAME=jsontoolkit \
+		-s WASM=1 -s NO_EXIT_RUNTIME=1 -s MODULARIZE=1 \
+		-s EXPORT_ES6=1 -s ENVIRONMENT=node
+
+.always:
diff --git a/bindings/webassembly/module.cc b/bindings/webassembly/module.cc
new file mode 100644
index 000000000..a18ba0fd0
--- /dev/null
+++ b/bindings/webassembly/module.cc
@@ -0,0 +1,17 @@
+#include <sourcemeta/jsontoolkit/json.h>
+
+// See https://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html
+#include <emscripten/bind.h>
+
+#include <cstdlib>  // EXIT_SUCCESS
+#include <iostream> // std::cout
+                    
+static auto hello() -> void {
+  const sourcemeta::jsontoolkit::JSON document{"Hello World"};
+  sourcemeta::jsontoolkit::stringify(document, std::cout);
+  std::cout << std::endl;
+}
+
+EMSCRIPTEN_BINDINGS(jsontoolkit) {
+  emscripten::function("hello", &hello);
+}
diff --git a/bindings/webassembly/test.js b/bindings/webassembly/test.js
new file mode 100644
index 000000000..edae5cf8d
--- /dev/null
+++ b/bindings/webassembly/test.js
@@ -0,0 +1,4 @@
+import wrapper from './build/jsontoolkit.js';
+wrapper().then((jsontoolkit) => {
+  jsontoolkit.hello();
+});
diff --git a/src/json/include/sourcemeta/jsontoolkit/json.h b/src/json/include/sourcemeta/jsontoolkit/json.h
index 19fd1b970..d1b850e3a 100644
--- a/src/json/include/sourcemeta/jsontoolkit/json.h
+++ b/src/json/include/sourcemeta/jsontoolkit/json.h
@@ -1,7 +1,11 @@
 #ifndef SOURCEMETA_JSONTOOLKIT_JSON_H_
 #define SOURCEMETA_JSONTOOLKIT_JSON_H_
 
+#ifdef __EMSCRIPTEN__
+#define SOURCEMETA_JSONTOOLKIT_JSON_EXPORT
+#else
 #include "json_export.h"
+#endif
 
 #include <sourcemeta/jsontoolkit/json_error.h>
 #include <sourcemeta/jsontoolkit/json_value.h>
diff --git a/src/json/include/sourcemeta/jsontoolkit/json_error.h b/src/json/include/sourcemeta/jsontoolkit/json_error.h
index 08b90cab2..133d79a68 100644
--- a/src/json/include/sourcemeta/jsontoolkit/json_error.h
+++ b/src/json/include/sourcemeta/jsontoolkit/json_error.h
@@ -1,7 +1,11 @@
 #ifndef SOURCEMETA_JSONTOOLKIT_JSON_ERROR_H_
 #define SOURCEMETA_JSONTOOLKIT_JSON_ERROR_H_
 
+#ifdef __EMSCRIPTEN__
+#define SOURCEMETA_JSONTOOLKIT_JSON_EXPORT
+#else
 #include "json_export.h"
+#endif
 
 #include <cstdint>    // std::uint64_t
 #include <exception>  // std::exception
diff --git a/src/json/include/sourcemeta/jsontoolkit/json_value.h b/src/json/include/sourcemeta/jsontoolkit/json_value.h
index e2142b02d..44ed5a23b 100644
--- a/src/json/include/sourcemeta/jsontoolkit/json_value.h
+++ b/src/json/include/sourcemeta/jsontoolkit/json_value.h
@@ -1,7 +1,11 @@
 #ifndef SOURCEMETA_JSONTOOLKIT_JSON_VALUE_H_
 #define SOURCEMETA_JSONTOOLKIT_JSON_VALUE_H_
 
+#ifdef __EMSCRIPTEN__
+#define SOURCEMETA_JSONTOOLKIT_JSON_EXPORT
+#else
 #include "json_export.h"
+#endif
 
 #include <sourcemeta/jsontoolkit/json_array.h>
 #include <sourcemeta/jsontoolkit/json_object.h>