Fixed: Preserve embedded ICC color profiles when converting and resizing images

Image.open() reads the source's ICC profile into img.info, but that dict resets to empty after convert() or resize(), and save() was never passing icc_profile anyway. DCI-P3 and Rec.2020 photos were silently falling back to sRGB interpretation once processed.

Dockerfile

@@ -1,10 +1,18 @@
-FROM python:3.11-slim
+FROM python:3.13-alpine AS builder
 
 WORKDIR /app
 
-COPY requirements.txt .
+RUN apk add --no-cache gcc musl-dev jpeg-dev zlib-dev
 
-RUN pip install --no-cache-dir -r requirements.txt
+COPY requirements.txt .
+RUN pip wheel --no-cache-dir --wheel-dir=/wheels -r requirements.txt
+
+FROM python:3.13-alpine
+
+WORKDIR /app
+
+COPY --from=builder /wheels /wheels
+RUN pip install --no-cache-dir --find-links=/wheels /wheels/* && rm -rf /wheels
 
 COPY build.py gallery.py VERSION /app/
 COPY ./src/ ./src/
@@ -12,7 +20,4 @@ COPY ./config /app/default
 COPY ./docker/.sh/entrypoint.sh /app/entrypoint.sh
 RUN chmod +x /app/entrypoint.sh
 
-RUN printf '#!/bin/sh\n/app/entrypoint.sh build\n' > /usr/local/bin/build && chmod +x /usr/local/bin/build && \
-    printf '#!/bin/sh\n/app/entrypoint.sh gallery\n' > /usr/local/bin/gallery && chmod +x /usr/local/bin/gallery
-
 ENTRYPOINT ["/app/entrypoint.sh"]

VERSION

@@ -1 +1 @@
-2.1.0
+2.1.2

docker/.sh/entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -e
 
 CYAN="\033[1;36m"
@@ -6,27 +6,26 @@ NC="\033[0m"
 
 copy_default_config() {
   echo "[~] Checking configuration directory..."
-  if [ ! -d "/app/config" ]; then
+  mkdir -p /app/config
-    mkdir -p /app/config
-  fi
 
   echo "[~] Checking if default config files/folders need to be copied..."
   files_copied=false
 
-  # Recursively check all files and folders in /app/default
+  for src in $(find /app/default -mindepth 1); do
-  while IFS= read -r src; do
     relpath="${src#/app/default/}"
     target="/app/config/$relpath"
     if [ ! -e "$target" ]; then
       echo "[→] Copying: $relpath"
       if [ -d "$src" ]; then
-        cp -r "$src" "$target"
+        mkdir -p "$target"
+        cp -r "$src/" "$target/"
       else
+        mkdir -p "$(dirname "$target")"
         cp "$src" "$target"
       fi
       files_copied=true
     fi
-  done < <(find /app/default -mindepth 1)
+  done
 
   if [ "$files_copied" = true ]; then
     echo "[✓] Default configuration files/folders copied successfully."

src/public/js/lazy.js

@@ -32,6 +32,14 @@ window.addEventListener("DOMContentLoaded", () => {
       img.classList.add("loaded");
     };
 
+    // Chrome HDR artefacting fix
+    const clearWillChange = (e) => {
+      if (e.propertyName !== "transform") return;
+      img.style.willChange = "auto";
+      img.removeEventListener("transitionend", clearWillChange);
+    };
+    img.addEventListener("transitionend", clearWillChange);
+
     if (img.complete && img.naturalHeight !== 0) {
       onLoad(); // already loaded
     } else {

src/py/builder/image_processor.py

@@ -11,6 +11,7 @@ def convert_and_resize_image(input_path, output_path, resize=True, max_width=114
             return
 
         img = Image.open(input_path)
+        icc_profile = img.info.get("icc_profile")
         if img.mode != "RGB":
             img = img.convert("RGB")
 
@@ -27,7 +28,10 @@ def convert_and_resize_image(input_path, output_path, resize=True, max_width=114
         if fmt == "JPEG":
             output_path = output_path.with_suffix(".jpg")
 
-        img.save(output_path, fmt, quality=90 if fmt == "JPEG" else 100)
+        save_kwargs = {"quality": 90 if fmt == "JPEG" else 100}
+        if icc_profile:
+            save_kwargs["icc_profile"] = icc_profile
+        img.save(output_path, fmt, **save_kwargs)
         logging.info(f"[✓] Processed image: {input_path} → {output_path}")
 
     except Exception as e: