diff --git a/.gitignore b/.gitignore
index f058830..a48972e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,6 @@ _data/
 __pycache__
 *.egg-info
 bin
-dist
\ No newline at end of file
+dist
+build
+releases
\ No newline at end of file
diff --git a/README.md b/README.md
index 52d06d7..0879dff 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,11 @@ The restore operation works in reverse: reads the QR codes from a single or a se
   - Backing up seed files from crypto wallets
 
 
+## Installation
+
+Download and extract one of the releases or download the python source code and execute.
+
+
 ## Basic Usage
 
 Using `--sha256` prints the hash of the input (on backup) or output (on restore) file.
diff --git a/pyinstaller-hooks/hook-zbarlight.py b/pyinstaller-hooks/hook-zbarlight.py
new file mode 100644
index 0000000..3dc32cb
--- /dev/null
+++ b/pyinstaller-hooks/hook-zbarlight.py
@@ -0,0 +1,3 @@
+from PyInstaller.utils.hooks import copy_metadata, collect_data_files
+
+datas = copy_metadata('zbarlight')
diff --git a/pypaperbak.spec b/pypaperbak.spec
new file mode 100644
index 0000000..738db3e
--- /dev/null
+++ b/pypaperbak.spec
@@ -0,0 +1,33 @@
+# -*- mode: python -*-
+
+block_cipher = None
+
+
+a = Analysis(['pypaperbak/__main__.py'],
+             pathex=['/home/user/projetos/pypaperbak'],
+             binaries=[],
+             datas=[('README.md', '.'), ('LICENSE.md', '.'), ('samples', 'samples')],
+             hiddenimports=['png'],
+             hookspath=['pyinstaller-hooks'],
+             runtime_hooks=[],
+             excludes=[],
+             win_no_prefer_redirects=False,
+             win_private_assemblies=False,
+             cipher=block_cipher)
+pyz = PYZ(a.pure, a.zipped_data,
+             cipher=block_cipher)
+exe = EXE(pyz,
+          a.scripts,
+          exclude_binaries=True,
+          name='pypaperbak',
+          debug=False,
+          strip=False,
+          upx=True,
+          console=True )
+coll = COLLECT(exe,
+               a.binaries,
+               a.zipfiles,
+               a.datas,
+               strip=False,
+               upx=True,
+               name='pypaperbak')
diff --git a/pypaperbak/app.py b/pypaperbak/app.py
index cc5f2f9..f008fe1 100644
--- a/pypaperbak/app.py
+++ b/pypaperbak/app.py
@@ -109,7 +109,7 @@ def run_backup(self, args):
         infile_size = os.path.getsize(infile.name)
 
         outfile = args.outfile        
-        inputhash = hashlib.sha256() if args.sha256 else None
+        inputhash = hashlib.sha256() 
         framedata = self.frame_data_func(args)
 
         qr_count = infile_size / chunksize + 1
@@ -124,7 +124,7 @@ def run_backup(self, args):
             bindata = infile.read(chunksize)
             if not bindata: break
             frame = framedata(bindata, qr_count, sizesofar)
-            if inputhash is not None: inputhash.update(bindata)
+            inputhash.update(bindata)
             sizesofar += len(bindata)
 
             qr_number += 1
@@ -136,7 +136,7 @@ def run_backup(self, args):
                     
         exporter.finish(inputhash)
         self.logger.info('Finished exporting')
-        if inputhash is not None: 
+        if args.sha256: 
             print('SHA-256 of input: %s' % inputhash.hexdigest())
 
     def run_restore(self, args): 
diff --git a/setup.py b/setup.py
index 771100b..f503c40 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,8 @@
           'pyqrcode', 
           'zbarlight',
           'fpdf',
-          'python-magic'
+          'python-magic',
+          'pypng'
       ],
       classifiers = [
             "Development Status :: 5 - Production/Stable",
diff --git a/util/gen-release.py b/util/gen-release.py
new file mode 100755
index 0000000..203c180
--- /dev/null
+++ b/util/gen-release.py
@@ -0,0 +1,14 @@
+#!/bin/env python
+
+import os
+import shutil
+
+exec(open('pypaperbak/_version.py').read())
+
+shutil.rmtree('build', True)
+shutil.rmtree('dist', True)
+os.makedirs('releases', exist_ok=True)
+
+
+os.system('pyinstaller pypaperbak.spec')
+os.system('tar -C dist -cjf releases/pypaperbak-%s-linux-x64.tar.bz2 pypaperbak' % __version__)