diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..563dd14
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 Michael Roitzsch
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/README.md b/README.md
index 2598707..a60c56f 100644
--- a/README.md
+++ b/README.md
@@ -12,3 +12,7 @@ Unpacks asset catalogs to individual files.
[**snapUtil**](https://github.com/ahl/apfs)
Manages APFS snapshots.
+
+___
+This work is licensed under the [MIT license](https://mit-license.org) so you can freely use
+and share as long as you retain the copyright notice and license text.
diff --git a/index.html b/index.html
index 9bc5c84..7f11cc3 100644
--- a/index.html
+++ b/index.html
@@ -100,7 +100,7 @@ document.addEventListener("DOMContentLoaded", event => {
Apple Internals
Collected knowledge about the internals of Apple’s platforms.
Sorted by keyword, abbreviation, or codename.
- Feel free to contribute on GitHub.
+ Feel free to contribute on GitHub or share under MIT license.