diff --git a/.gitignore b/.gitignore
index e9d30d7..2eea41a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.pyc
 .DS_Store
 node_modules
+dist
diff --git a/EXT-README.md b/EXT-README.md
new file mode 100644
index 0000000..0a4fee4
--- /dev/null
+++ b/EXT-README.md
@@ -0,0 +1,6 @@
+# tintd
+
+A syntax highlighter for WGSL (WebGPU Shading Language).
+
+This is an unofficial build of tintd, part of the [Dawn](https://dawn.googlesource.com/dawn)
+project. This unofficial build is produced [here](https://github.com/greggman/tintd-builder).
diff --git a/build/build.js b/build/build.js
index 34c917f..d93c4e5 100644
--- a/build/build.js
+++ b/build/build.js
@@ -20,6 +20,8 @@ function fixupPackageJson(filename) {
     ...pkg,
     ...vsPkg,
     version: pkg.version,
+    publisher: 'gfx-tintd',
+    icon: 'tintd-128x128.png',
   };
   fs.writeFileSync(filename, JSON.stringify(newPkg, null, 2));
 }
@@ -81,6 +83,8 @@ async function main() {
     await buildTintD();
     fixupPackageJson(`${buildPath}/package.json`);
     fs.copyFileSync('third_party/dawn/LICENSE', `${buildPath}/LICENSE`);
+    fs.copyFileSync('EXt-README.md', `${buildPath}/README.md`);
+    fs.copyFileSync('resources/images/tintd-128x128.png', `${buildPath}/tintd-128x128.png`);
     await packageExtension(target);
     const packageName = await copyPackage(buildPath, target);
     console.log('created:', packageName);
diff --git a/resources/images/tintd-128x128.png b/resources/images/tintd-128x128.png
new file mode 100644
index 0000000..df679bd
Binary files /dev/null and b/resources/images/tintd-128x128.png differ
diff --git a/resources/images/tintd-256x256.png b/resources/images/tintd-256x256.png
new file mode 100644
index 0000000..df679bd
Binary files /dev/null and b/resources/images/tintd-256x256.png differ