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app.py

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+import streamlit as st
+from PIL import Image
+import io
+
+def resize_image(image, target_size_kb=None, quality=85):
+  """Resizes and compresses an image."""
+  img = Image.open(image)
+  img_byte_arr = io.BytesIO()
+  img.save(img_byte_arr, format='JPEG', quality=quality)
+  current_size_kb = len(img_byte_arr.getvalue()) / 1024
+
+  # Resize based on target size (if provided)
+  if target_size_kb:
+    while current_size_kb > target_size_kb and quality > 10:
+      quality -= 5
+      img_byte_arr = io.BytesIO()
+      img.save(img_byte_arr, format='JPEG', quality=quality)
+      current_size_kb = len(img_byte_arr.getvalue()) / 1024
+  else:
+    # Resize based on quality
+    pass  # No resizing for quality-based option
+
+  img = Image.open(img_byte_arr)
+  return img
+
+st.title("Image Resizer")
+st.write("Resize and compress your images!")
+
+# Upload image
+uploaded_file = st.file_uploader("Choose an Image:", type=["jpg", "jpeg", "png"])
+
+if uploaded_file is not None:
+  # Option selection for resizing
+  resize_option = st.selectbox("Resize Option:", ("Percentage Quality", "Desired Output Size"))
+
+  if resize_option == "Percentage Quality":
+    # User input for quality
+    quality = st.slider("Quality (%)", min_value=10, max_value=100, value=85)
+
+  elif resize_option == "Desired Output Size":
+    # Options for size units
+    size_unit_options = ("KB", "MB")
+    size_unit = st.selectbox("Size Unit", size_unit_options)
+
+    # User input for size
+    target_size = st.number_input("Target Size", min_value=1)
+
+    # Convert target size to KB based on unit
+    if size_unit == "MB":
+      target_size_kb = target_size * 1024
+    else:
+      target_size_kb = target_size
+
+  # Process and display image
+  if uploaded_file and (quality or target_size_kb):
+    resized_image = resize_image(uploaded_file, target_size_kb, quality)
+    st.image(resized_image, caption="Resized Image")
+
+    # Download link
+    with io.BytesIO() as buffer:
+      resized_image.save(buffer, format="JPEG")
+      download_link = st.download_button(
+          label="Download Resized Image",
+          data=buffer.getvalue(),
+          file_name="resized_image.jpg",
+          mime="image/jpeg",
+      )
+
+# Requirements (req.txt)
+
+# Since the app uses only built-in libraries (streamlit and Pillow), there's no need for an external requirements file. 
+# However, if you plan to use additional libraries, you can create a req.txt file listing them. 
+# For example:
+# streamlit
+# Pillow