diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3674f210..7d1ad35c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 * added `wait` option in `YoutubeDownloader` to allow parallelism while using context manager
 * do not use extension for finding format in `ensure_matches()` in `image.optimization` module
 * added `VideoWebmHigh` and `VideoMp4High` presets for high quality WebM and Mp4 convertion respectively
+* updated presets `WebpHigh`, `JpegMedium`, `JpegLow` and `PngMedium` in `image.presets`
 
 # 1.3.3
 
diff --git a/src/zimscraperlib/image/presets.py b/src/zimscraperlib/image/presets.py
index 96e1c211..abd6eb60 100644
--- a/src/zimscraperlib/image/presets.py
+++ b/src/zimscraperlib/image/presets.py
@@ -48,7 +48,7 @@ class WebpHigh:
 
     options = {
         "lossless": False,
-        "quality": 60,
+        "quality": 90,
         "method": 6,
     }
 
@@ -136,7 +136,7 @@ class PngMedium:
     VERSION = 1
 
     options = {
-        "reduce_colors": True,
+        "reduce_colors": False,
         "remove_transparency": False,
         "fast_mode": False,
     }
@@ -169,7 +169,7 @@ class JpegLow:
     options = {
         "quality": 45,
         "keep_exif": False,
-        "fast_mode": False,
+        "fast_mode": True,
     }
 
 
@@ -185,7 +185,7 @@ class JpegMedium:
     options = {
         "quality": 65,
         "keep_exif": False,
-        "fast_mode": False,
+        "fast_mode": True,
     }
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 8aa8dd2d..142705b3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -105,4 +105,4 @@ def gif_image():
 
 @pytest.fixture(scope="module")
 def webp_image():
-    return file_src("whitewater.webp")
+    return file_src("ninja.webp")
diff --git a/tests/files/ninja.webp b/tests/files/ninja.webp
new file mode 100644
index 00000000..fb83af14
Binary files /dev/null and b/tests/files/ninja.webp differ
diff --git a/tests/files/whitewater.webp b/tests/files/whitewater.webp
deleted file mode 100644
index c833c5d4..00000000
Binary files a/tests/files/whitewater.webp and /dev/null differ
diff --git a/tests/image/test_image.py b/tests/image/test_image.py
index cf936b34..5d1a5c58 100644
--- a/tests/image/test_image.py
+++ b/tests/image/test_image.py
@@ -333,7 +333,7 @@ def test_optimize_image_allow_convert(png_image, tmp_path):
     [
         (WebpLow(), 1, {"lossless": False, "quality": 40, "method": 6}, "webp"),
         (WebpMedium(), 1, {"lossless": False, "quality": 50, "method": 6}, "webp"),
-        (WebpHigh(), 1, {"lossless": False, "quality": 60, "method": 6}, "webp"),
+        (WebpHigh(), 1, {"lossless": False, "quality": 90, "method": 6}, "webp"),
         (
             GifLow(),
             1,
@@ -382,7 +382,7 @@ def test_optimize_image_allow_convert(png_image, tmp_path):
         (
             PngMedium(),
             1,
-            {"reduce_colors": True, "remove_transparency": False, "fast_mode": False},
+            {"reduce_colors": False, "remove_transparency": False, "fast_mode": False},
             "png",
         ),
         (
@@ -391,11 +391,11 @@ def test_optimize_image_allow_convert(png_image, tmp_path):
             {"reduce_colors": False, "remove_transparency": False, "fast_mode": True},
             "png",
         ),
-        (JpegLow(), 1, {"quality": 45, "keep_exif": False, "fast_mode": False}, "jpg"),
+        (JpegLow(), 1, {"quality": 45, "keep_exif": False, "fast_mode": True}, "jpg"),
         (
             JpegMedium(),
             1,
-            {"quality": 65, "keep_exif": False, "fast_mode": False},
+            {"quality": 65, "keep_exif": False, "fast_mode": True},
             "jpg",
         ),
         (JpegHigh(), 1, {"quality": 80, "keep_exif": True, "fast_mode": True}, "jpg"),