From 2b1bcbb058ed58aa2fe2c396ec98d8a9727fc783 Mon Sep 17 00:00:00 2001
From: The-Last-Cookie <50201659+The-Last-Cookie@users.noreply.github.com>
Date: Thu, 15 Jun 2023 22:28:15 +0200
Subject: [PATCH 1/3] Add basic script to convert webp to jpeg or gif

---
 webp.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 webp.py

diff --git a/webp.py b/webp.py
new file mode 100644
index 0000000..f8d38d1
--- /dev/null
+++ b/webp.py
@@ -0,0 +1,26 @@
+import os
+from PIL import Image
+
+# taken from https://stackoverflow.com/a/61242086
+def isAnimated(file_path: str) -> bool:
+    with open(file_path, mode='rb') as file_handler:
+        file_handler.seek(12)
+        if file_handler.read(4) == b'VP8X':
+            file_handler.seek(20)
+            is_animated_byte = file_handler.read(1)
+            return (ord(is_animated_byte) >> 1) & 1
+        return False
+
+def convert(file_path: str, format = 'jpeg', overwrite = False, **params) -> None:
+    new_file_path = file_path[:-4] + format
+    img = Image.open(file_path)
+    img.save(new_file_path, format, **params)
+
+    if overwrite:
+        os.remove(file_path)
+
+file_path = 'img.webp'
+if isAnimated(file_path):
+    convert(file_path, 'gif', quality=95, optimize=True, save_all=True)
+else:
+    convert(file_path, 'jpeg', quality=95, optimize=True, subsampling=0)

From 2eee80e9944e37bbf31af2d4e29f1ccb5612614d Mon Sep 17 00:00:00 2001
From: The-Last-Cookie <50201659+The-Last-Cookie@users.noreply.github.com>
Date: Mon, 23 Sep 2024 00:36:56 +0200
Subject: [PATCH 2/3] Add support for transparency

---
 webp.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/webp.py b/webp.py
index f8d38d1..21537f4 100644
--- a/webp.py
+++ b/webp.py
@@ -11,15 +11,23 @@ def isAnimated(file_path: str) -> bool:
             return (ord(is_animated_byte) >> 1) & 1
         return False
 
+def isTransparent(img: Image) -> bool:
+    return img.mode == "RGBA" or "transparency" in img.info
+
 def convert(file_path: str, format = 'jpeg', overwrite = False, **params) -> None:
     new_file_path = file_path[:-4] + format
     img = Image.open(file_path)
+
+    # JPEG does not support alpha channel
+    if isTransparent(img) and format == 'jpeg':
+        img = img.convert('RGB')
+
     img.save(new_file_path, format, **params)
 
     if overwrite:
         os.remove(file_path)
 
-file_path = 'img.webp'
+file_path = ''
 if isAnimated(file_path):
     convert(file_path, 'gif', quality=95, optimize=True, save_all=True)
 else:

From fb9a34d9e8c04fb7bcb8599df85e3cd445f0e6f6 Mon Sep 17 00:00:00 2001
From: The-Last-Cookie <50201659+The-Last-Cookie@users.noreply.github.com>
Date: Mon, 23 Sep 2024 14:18:23 +0200
Subject: [PATCH 3/3] Add filename to README

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 9ecfc15..52b1c3b 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,10 @@ Crop an image on specific coordinates
 
 ## webp
 
+```md
+webp.py
+```
+
 webp to jpg or gif converter
 
 *Notice: This requires [Pillow](https://python-pillow.org/).*