From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sat, 6 Jan 2024 18:39:10 +0000 (+0000)
Subject: docs: Deliver images with a better quality (and larger size)
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=60b2a858d7a4adaa6ccf592b38771c2bb07da79b;hp=ccfb1584722c29b2209b795e90bb105a1122542c;p=ipfire.org.git

docs: Deliver images with a better quality (and larger size)

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/backend/util.py b/src/backend/util.py
index 4f85b740..9afc6e67 100644
--- a/src/backend/util.py
+++ b/src/backend/util.py
@@ -206,7 +206,7 @@ def normalize(s):
 
 	return "-".join(s.split())
 
-def generate_thumbnail(image, size, square=False, format=None, **args):
+def generate_thumbnail(image, size, square=False, format=None, quality=None, **args):
 	assert image, "No image data received"
 
 	if not isinstance(image, PIL.Image.Image):
@@ -271,17 +271,17 @@ def generate_thumbnail(image, size, square=False, format=None, **args):
 	# Arguments to optimise the compression
 	args.update({
 		"subsampling" : "4:2:0",
-		"quality"     : 72,
+		"quality"     : quality or 72,
 	})
 
 	if image.format == "JPEG":
 		args.update({
-			"qtables"      : "web_low",
+			"qtables" : "web_low",
 		})
 
 	elif image.format == "WEBP":
 		args.update({
-			"lossless"    : False,
+			"lossless" : False,
 		})
 
 	with io.BytesIO() as f:
diff --git a/src/backend/wiki.py b/src/backend/wiki.py
index 349a94d0..caacf702 100644
--- a/src/backend/wiki.py
+++ b/src/backend/wiki.py
@@ -704,7 +704,7 @@ class File(misc.Object):
 			return thumbnail
 
 		# Generate the thumbnail
-		thumbnail = util.generate_thumbnail(self.blob, size, format=format)
+		thumbnail = util.generate_thumbnail(self.blob, size, format=format, quality=95)
 
 		# Put it into the cache for forever
 		await self.backend.cache.set(cache_key, thumbnail)