diff --git a/bin/confluence.js b/bin/confluence.js
index afe1d81..3fe20b7 100755
--- a/bin/confluence.js
+++ b/bin/confluence.js
@@ -47,6 +47,15 @@ function handleCommandError(analytics, commandName, error, onExtra = null) {
   process.exit(1);
 }
 
+async function readStdin() {
+  process.stdin.setEncoding('utf8');
+  let data = '';
+  for await (const chunk of process.stdin) {
+    data += chunk;
+  }
+  return data;
+}
+
 // Wraps a command action with the standard analytics + client + error pipeline.
 // The handler still calls analytics.track(name, true) on success so it can opt
 // into alternative tracking keys (e.g. *_cancel, *_dry_run).
@@ -1987,7 +1996,11 @@ program
       if (options.inputFile) {
         input = fs.readFileSync(options.inputFile, 'utf-8');
       } else {
-        input = fs.readFileSync(process.stdin.fd, 'utf-8');
+        if (process.stdin.isTTY) {
+          console.error(chalk.red('Error: No input provided. Use --input-file <path> or pipe content via stdin.'));
+          process.exit(1);
+        }
+        input = await readStdin();
       }
 
       const converter = ConfluenceClient.createLocalConverter();
diff --git a/tests/convert.test.js b/tests/convert.test.js
index c96c21c..840715c 100644
--- a/tests/convert.test.js
+++ b/tests/convert.test.js
@@ -73,6 +73,24 @@ describe('convert command', () => {
     expect(output).toContain('World');
   });
 
+  test('reads input from stdin when --input-file is omitted', () => {
+    const output = run(
+      ['convert', '--input-format', 'markdown', '--output-format', 'storage'],
+      '# Piped\n\nbody\n'
+    );
+    expect(output).toContain('<h1>');
+    expect(output).toContain('Piped');
+    expect(output).toContain('body');
+  });
+
+  test('handles empty stdin without hanging or crashing', () => {
+    const output = run(
+      ['convert', '--input-format', 'markdown', '--output-format', 'storage'],
+      ''
+    );
+    expect(output).toBe('');
+  });
+
   test('markdown to storage via files', () => {
     const inputFile = writeInput('input.md', '# Test\n\nParagraph\n');
     const outputFile = path.join(tmpDir, 'output.xml');