diff --git a/Makefile b/Makefile
index f812c26..3d87e71 100644
--- a/Makefile
+++ b/Makefile
@@ -50,9 +50,7 @@ benchmark-deps:
 	npm run benchmark-deps
 
 specsplit:
-	./support/specsplit.js good ./test/fixtures/commonmark/spec.txt > ./test/fixtures/commonmark/good.txt
-	./support/specsplit.js bad ./test/fixtures/commonmark/spec.txt > ./test/fixtures/commonmark/bad.txt
-	./support/specsplit.js ./test/fixtures/commonmark/spec.txt
+	npm run specsplit
 
 todo:
 	grep 'TODO' -n -r ./lib 2>/dev/null || test true
diff --git a/package.json b/package.json
index 384ef87..9501c3c 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   },
   "scripts": {
     "lint": "eslint .",
-    "test": "npm run lint && nyc mocha && node support/specsplit.js test/fixtures/commonmark/spec.txt",
+    "test": "npm run lint && nyc mocha && node support/specsplit.js",
     "coverage": "npm run test && nyc report --reporter html",
     "report-coveralls": "nyc report --reporter=text-lcov | coveralls",
     "doc": "node support/build_doc.js",
@@ -26,6 +26,8 @@
     "gh-demo": "npm run demo && gh-pages -d demo -f -b master -r git@github.com:markdown-it/markdown-it.github.io.git",
     "browserify": "rollup -c support/rollup.config.js",
     "benchmark-deps": "npm install --prefix benchmark/extra/ -g marked@0.3.6 commonmark@0.26.0 markdown-it/markdown-it.git#2.2.1",
+    "specsplit": "support/specsplit.js good -o test/fixtures/commonmark/good.txt && support/specsplit.js bad -o test/fixtures/commonmark/bad.txt && support/specsplit.js",
+    "todo": "grep 'TODO' -n -r ./lib 2>/dev/null",
     "prepublishOnly": "npm run gh-demo && npm run gh-doc"
   },
   "files": [
diff --git a/support/specsplit.js b/support/specsplit.js
index 925334c..aaf5833 100755
--- a/support/specsplit.js
+++ b/support/specsplit.js
@@ -22,8 +22,14 @@ cli.add_argument('type', {
   choices: [ 'good', 'bad' ]
 });
 
-cli.add_argument('spec', {
-  help: 'spec file to read'
+cli.add_argument('-s', '--spec', {
+  help: 'spec file to read',
+  default: require('path').join(__dirname, '../test/fixtures/commonmark/spec.txt')
+});
+
+cli.add_argument('-o', '--output', {
+  help: 'output file, stdout if not set',
+  default: '-'
 });
 
 var options = cli.parse_args();
@@ -103,21 +109,26 @@ readFile(options.spec, 'utf8', function (error, input) {
       }
     });
 
+  var out = [];
+
   if (!options.type) {
-    console.log(util.format('CM spec stat: passed samples - %s, failed samples - %s', good.length, bad.length));
+    out.push(util.format('CM spec stat: passed samples - %s, failed samples - %s', good.length, bad.length));
   } else {
     var data = options.type === 'good' ? good : bad;
 
     data.forEach(function (sample) {
-      console.log(util.format(
+      out.push(util.format(
         '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n' +
         'src line: %s\n\n.\n%s.\n%s.\n',
         sample.line, sample.md, sample.html));
       if (sample.err) {
-        console.log(util.format('error:\n\n%s\n', sample.err));
+        out.push(util.format('error:\n\n%s\n', sample.err));
       }
     });
   }
 
+  if (options.output != '-') fs.writeFileSync(options.output, out.join('\n'));
+  else console.log(out.join('\n'));
+
   process.exit(0);
 });