diff --git a/esphome/components/animation/__init__.py b/esphome/components/animation/__init__.py
index 1780bdf72e..7c9ff07f97 100644
--- a/esphome/components/animation/__init__.py
+++ b/esphome/components/animation/__init__.py
@@ -44,8 +44,9 @@ async def to_code(config):
     width, height = image.size
     frames = image.n_frames
     if CONF_RESIZE in config:
-        image.thumbnail(config[CONF_RESIZE])
-        width, height = image.size
+        new_width_max, new_height_max = config[CONF_RESIZE]
+        ratio = min(new_width_max / width, new_height_max / height)
+        width, height = int(width * ratio), int(height * ratio)
     else:
         if width > 500 or height > 500:
             _LOGGER.warning(
@@ -59,10 +60,12 @@ async def to_code(config):
         for frameIndex in range(frames):
             image.seek(frameIndex)
             frame = image.convert("L", dither=Image.NONE)
+            if CONF_RESIZE in config:
+                frame = frame.resize([width, height])
             pixels = list(frame.getdata())
             if len(pixels) != height * width:
                 raise core.EsphomeError(
-                    f"Unexpected number of pixels in frame {frameIndex}: {len(pixels)} != {height*width}"
+                    f"Unexpected number of pixels in {path} frame {frameIndex}: ({len(pixels)} != {height*width})"
                 )
             for pix in pixels:
                 data[pos] = pix
@@ -73,13 +76,13 @@ async def to_code(config):
         pos = 0
         for frameIndex in range(frames):
             image.seek(frameIndex)
-            if CONF_RESIZE in config:
-                image.thumbnail(config[CONF_RESIZE])
             frame = image.convert("RGB")
+            if CONF_RESIZE in config:
+                frame = frame.resize([width, height])
             pixels = list(frame.getdata())
             if len(pixels) != height * width:
                 raise core.EsphomeError(
-                    f"Unexpected number of pixels in frame {frameIndex}: {len(pixels)} != {height*width}"
+                    f"Unexpected number of pixels in {path} frame {frameIndex}: ({len(pixels)} != {height*width})"
                 )
             for pix in pixels:
                 data[pos] = pix[0]
@@ -95,6 +98,8 @@ async def to_code(config):
         for frameIndex in range(frames):
             image.seek(frameIndex)
             frame = image.convert("1", dither=Image.NONE)
+            if CONF_RESIZE in config:
+                frame = frame.resize([width, height])
             for y in range(height):
                 for x in range(width):
                     if frame.getpixel((x, y)):