diff --git a/README.md b/README.md
index efa6917..97cb4db 100644
--- a/README.md
+++ b/README.md
@@ -46,16 +46,52 @@ Pre-commit hook to ensure image metadata (EXIF data and extended attributes) is
 
 ## Usage
 
+### Pre-commit hook
+
 Add the following to your `.pre-commit-config.yaml` file:
 
 ```yaml
 - repo: https://github.com/stefmolin/exif-stripper
-  rev: 0.3.1
+  rev: 0.4.0
   hooks:
     - id: strip-exif
 ```
 
 Be sure to check out the [pre-commit documentation](https://pre-commit.com/#pre-commit-configyaml---hooks) for additional configuration options.
 
+### Command line
+
+First, install the `exif-stripper` package from PyPI:
+
+```shell
+$ python -m pip install exif-stripper
+```
+
+Then, use the `strip-exif` entry point on the file(s) of your choice:
+
+```shell
+$ strip-exif /path/to/file [/path/to/another/file]
+```
+
+Run `strip-exif --help` for more information.
+
+### Python
+
+First, install the `exif-stripper` package from PyPI:
+
+```shell
+$ python -m pip install exif-stripper
+```
+
+Then, use the `process_image()` function on individual files (returns `True` if the file was altered and `False` otherwise):
+
+```python
+from exif_stripper import process_image
+process_image('/path/to/image')
+```
+
+*Note: This requires version 0.4.0 or above.*
+
 ## Contributing
+
 Please consult the [contributing guidelines](CONTRIBUTING.md).
diff --git a/src/exif_stripper/__init__.py b/src/exif_stripper/__init__.py
index 9c27d2d..5eb91e7 100644
--- a/src/exif_stripper/__init__.py
+++ b/src/exif_stripper/__init__.py
@@ -1,3 +1,50 @@
 """EXIF stripper."""
 
-__version__ = '0.3.1'
+from __future__ import annotations
+
+import os
+import platform
+
+from PIL import Image, UnidentifiedImageError
+
+__version__ = '0.4.0'
+
+
+def process_image(filename: str | os.PathLike) -> bool:
+    """
+    Process image metadata.
+
+    Parameters
+    ----------
+    filename : str | os.PathLike
+        The image file to check.
+
+    Returns
+    -------
+    bool
+        Indicator of whether metadata was stripped.
+    """
+    has_changed = False
+    try:
+        # remove EXIF data
+        with Image.open(filename) as im:
+            if exif := im.getexif():
+                exif.clear()
+                im.save(filename)
+                has_changed = True
+    except (FileNotFoundError, UnidentifiedImageError):
+        pass  # not an image
+    else:
+        # remove extended attributes (Unix only)
+        if platform.system() != 'Windows':
+            from xattr import xattr
+
+            xattr_obj = xattr(filename)
+            if xattr_obj.list():
+                xattr_obj.clear()
+                has_changed = True
+
+    if has_changed:
+        print(f'Stripped metadata from {filename}')
+
+    return has_changed
diff --git a/src/exif_stripper/cli.py b/src/exif_stripper/cli.py
index 2cfc96b..380a706 100644
--- a/src/exif_stripper/cli.py
+++ b/src/exif_stripper/cli.py
@@ -3,57 +3,13 @@
 from __future__ import annotations
 
 import argparse
-import os
-import platform
 from typing import Sequence
 
-from PIL import Image, UnidentifiedImageError
-
-from . import __version__
+from . import __version__, process_image
 
 PROG = 'strip-exif'
 
 
-def process_image(filename: str | os.PathLike) -> bool:
-    """
-    Process image metadata.
-
-    Parameters
-    ----------
-    filename : str | os.PathLike
-        The image file to check.
-
-    Returns
-    -------
-    bool
-        Indicator of whether metadata was stripped.
-    """
-    has_changed = False
-    try:
-        # remove EXIF data
-        with Image.open(filename) as im:
-            if exif := im.getexif():
-                exif.clear()
-                im.save(filename)
-                has_changed = True
-    except (FileNotFoundError, UnidentifiedImageError):
-        pass  # not an image
-    else:
-        # remove extended attributes (Unix only)
-        if platform.system() != 'Windows':
-            from xattr import xattr
-
-            xattr_obj = xattr(filename)
-            if xattr_obj.list():
-                xattr_obj.clear()
-                has_changed = True
-
-    if has_changed:
-        print(f'Stripped metadata from {filename}')
-
-    return has_changed
-
-
 def main(argv: Sequence[str] | None = None) -> int:
     """
     Tool for stripping EXIF data from images.