diff --git a/sample.svg b/sample.svg
new file mode 100644
index 0000000..e6d8536
--- /dev/null
+++ b/sample.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="100"
+   height="100"
+   viewBox="0 0 26.458333 26.458333"
+   version="1.1"
+   id="svg5"
+   inkscape:version="1.2.1 (8a69933317, 2022-10-28, custom)"
+   sodipodi:docname="penpot_circle.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="px"
+     showgrid="false"
+     inkscape:zoom="2.8284271"
+     inkscape:cx="145.13367"
+     inkscape:cy="29.168155"
+     inkscape:window-width="2486"
+     inkscape:window-height="1376"
+     inkscape:window-x="74"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer8" />
+  <defs
+     id="defs2" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <g
+       inkscape:groupmode="layer"
+       id="layer8"
+       inkscape:label="icons"
+       style="display:inline;fill:#000000"
+       transform="matrix(0.26458333,0,0,0.26458333,-24.379693,-40.415772)">
+      <circle
+         style="fill:#ffd700;fill-opacity:1;stroke:none;stroke-width:2749.72;stroke-linecap:round;stroke-dasharray:none;stop-color:#000000"
+         id="path1640"
+         cx="142.14372"
+         cy="202.75252"
+         r="50" />
+    </g>
+  </g>
+</svg>
diff --git a/src/svgoCli.js b/src/svgoCli.js
index 333b8a6..fb20344 100644
--- a/src/svgoCli.js
+++ b/src/svgoCli.js
@@ -1,6 +1,13 @@
 const fs = require("fs");
+const process = require("process");
 const svgo = require("./svgo.js");
-const input = fs.readFileSync(0, 'utf-8');
-const output = svgo.optimize(input, svgo.defaultOptions);
-process.stdout.write(output);
-process.exit(0);
+
+try {
+  const input = fs.readFileSync(0, {encoding: 'utf-8'});
+  const output = svgo.optimize(input, svgo.defaultOptions);
+  fs.writeFileSync(1, output, {encoding: 'utf-8', flush: true});
+  process.exit(0);
+} catch (cause) {
+  console.error(cause);
+  process.exit(1);
+}