diff --git a/package.json b/package.json
index 323a7370..0426da40 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "clean:generator": "npm run -w packages/generator clean",
     "clean:manipulator": "npm run -w packages/manipulator clean",
     "clean:ui": "npm run -w packages/ui clean",
-    "build": "npm run clean && npm run build:common && npm run build:converter && npm run build:schemas && npm-run-all --parallel build:generator build:ui",
+    "build": "npm run clean && npm run build:common && npm run build:converter && npm run build:schemas && npm-run-all --parallel build:generator build:ui build:manipulator",
     "build:common": "npm run -w packages/common build",
     "build:converter": "npm run -w packages/converter build",
     "build:schemas": "npm run -w packages/schemas build",
diff --git a/playground/.gitignore b/playground/.gitignore
index 5d50f4b6..1f845bd7 100644
--- a/playground/.gitignore
+++ b/playground/.gitignore
@@ -23,6 +23,7 @@ dist-ssr
 *.sln
 *.sw?
 
-test.pdf
+node-playground/test-generate.pdf
+node-playground/test-merge.pdf
 public/template-assets/**/thumbnail.png
 scripts/thumbnail-hash-map.json
\ No newline at end of file
diff --git a/playground/node-playground/a.pdf b/playground/node-playground/a.pdf
new file mode 100644
index 00000000..694f4fcd
Binary files /dev/null and b/playground/node-playground/a.pdf differ
diff --git a/playground/node-playground/b.pdf b/playground/node-playground/b.pdf
new file mode 100644
index 00000000..36d465f2
Binary files /dev/null and b/playground/node-playground/b.pdf differ
diff --git a/playground/generate.js b/playground/node-playground/generate.js
similarity index 91%
rename from playground/generate.js
rename to playground/node-playground/generate.js
index fdf3ca2b..da4e71c4 100644
--- a/playground/generate.js
+++ b/playground/node-playground/generate.js
@@ -36,5 +36,5 @@ const inputs = [{ a: 'a1', b: 'b1', c: 'c1' }];
 
 generate({ template, inputs }).then((pdf) => {
   console.log(pdf);
-  fs.writeFileSync(path.join(__dirname, `test.pdf`), pdf);
+  fs.writeFileSync(path.join(__dirname, `test-generate.pdf`), pdf);
 });
\ No newline at end of file
diff --git a/playground/node-playground/merge.js b/playground/node-playground/merge.js
new file mode 100644
index 00000000..71822864
--- /dev/null
+++ b/playground/node-playground/merge.js
@@ -0,0 +1,11 @@
+const { merge } = require('@pdfme/manipulator');
+const fs = require('fs');
+const path = require('path');
+
+const aPdf = fs.readFileSync(path.join(__dirname, 'a.pdf'));
+const bPdf = fs.readFileSync(path.join(__dirname, 'b.pdf'));
+
+merge([aPdf, bPdf]).then((pdf) => {
+  console.log(pdf);
+  fs.writeFileSync(path.join(__dirname, `test-merge.pdf`), pdf);
+});
\ No newline at end of file
diff --git a/playground/package.json b/playground/package.json
index 215c80f6..be59b490 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -19,6 +19,7 @@
     "@pdfme/generator": "file:../packages/generator/dist",
     "@pdfme/schemas": "file:../packages/schemas/dist",
     "@pdfme/ui": "file:../packages/ui/dist",
+    "@pdfme/manipulator": "file:../packages/manipulator/dist",
     "canvas": "^2.11.2",
     "esbuild": "^0.19.10",
     "lucide-react": "^0.475.0",