PR #45: Image Watermarking Tool

adding water adder using python
Merge pull request #45 from ramanuj-droid/water

Author: iamwatchdogs

Image_watermark_Adder/README.md

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+# 🖋️ Image Watermarking Tool
+
+A simple **Streamlit** app to add **text or logo watermarks** to images.
+
+---
+
+## 🚀 Features
+- Upload image (JPG/PNG)
+- Add **text** watermark with adjustable font size, position, and opacity  
+- Add **logo** watermark with adjustable size, position, and transparency  
+- Live preview before download  
+- Download final image as JPG  
+
+---
+
+## 🧱 Tech Stack
+- **Python 3**
+- **Streamlit**
+- **Pillow (PIL)**

Image_watermark_Adder/app.py

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+import streamlit as st
+from PIL import Image
+import os
+from utils.watermark import add_text_watermark, add_logo_watermark
+
+st.set_page_config(page_title=" Image Watermarking Tool", layout="wide")
+
+st.title(" Image Watermarking Tool")
+st.write("Upload an image, add a text or logo watermark, and download the result.")
+
+os.makedirs("output", exist_ok=True)
+
+uploaded_file = st.file_uploader("Upload an image", type=["jpg", "jpeg", "png"])
+
+if uploaded_file:
+    image = Image.open(uploaded_file).convert("RGB")
+    st.image(image, caption="Original Image", use_container_width=True)
+
+    st.sidebar.header(" Settings")
+    wm_type = st.sidebar.radio("Watermark Type", ["Text", "Logo"])
+
+    position = st.sidebar.selectbox("Position", ["Top-Left", "Top-Right", "Bottom-Left", "Bottom-Right", "Center"])
+    opacity = st.sidebar.slider("Opacity", 0.0, 1.0, 0.5)
+
+    if wm_type == "Text":
+        text = st.sidebar.text_input("Enter Watermark Text", "© MyBrand")
+        font_size = st.sidebar.slider("Font Size", 20, 100, 40)
+
+        if st.sidebar.button("Apply Text Watermark"):
+            result = add_text_watermark(image, text, position, opacity, font_size)
+            output_path = os.path.join("output", "watermarked_text.jpg")
+            result.save(output_path)
+            st.image(result, caption="Watermarked Image", use_container_width=True)
+            st.download_button("Download Image", data=open(output_path, "rb"), file_name="watermarked_text.jpg")
+
+    elif wm_type == "Logo":
+        logo_file = st.sidebar.file_uploader("Upload Logo (PNG preferred)", type=["png"])
+        scale = st.sidebar.slider("Logo Scale", 0.05, 0.5, 0.2)
+
+        if st.sidebar.button("Apply Logo Watermark"):
+            if logo_file:
+                logo_path = os.path.join("assets", "temp_logo.png")
+                os.makedirs("assets", exist_ok=True)
+                with open(logo_path, "wb") as f:
+                    f.write(logo_file.getbuffer())
+
+                result = add_logo_watermark(image, logo_path, position, opacity, scale)
+                output_path = os.path.join("output", "watermarked_logo.jpg")
+                result.save(output_path)
+                st.image(result, caption="Watermarked Image", use_container_width=True)
+                st.download_button("Download Image", data=open(output_path, "rb"), file_name="watermarked_logo.jpg")
+            else:
+                st.warning("Please upload a logo image.")

Image_watermark_Adder/requirements.txt

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+streamlit
+pillow

Image_watermark_Adder/utils/__init__.py

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+from PIL import Image, ImageDraw, ImageFont, ImageEnhance
+import os
+
+def add_text_watermark(image, text, position, opacity=0.5, font_size=40):
+    watermark = image.copy()
+    drawable = ImageDraw.Draw(watermark)
+
+    try:
+        font = ImageFont.truetype("arial.ttf", font_size)
+    except:
+        font = ImageFont.load_default()
+
+    bbox = drawable.textbbox((0, 0), text, font=font)
+    textwidth = bbox[2] - bbox[0]
+    textheight = bbox[3] - bbox[1]
+
+    width, height = image.size
+    margin = 10
+    positions = {
+        "Top-Left": (margin, margin),
+        "Top-Right": (width - textwidth - margin, margin),
+        "Bottom-Left": (margin, height - textheight - margin),
+        "Bottom-Right": (width - textwidth - margin, height - textheight - margin),
+        "Center": ((width - textwidth) // 2, (height - textheight) // 2)
+    }
+    pos = positions.get(position, positions["Bottom-Right"])
+
+    # Draw text with opacity
+    drawable.text(pos, text, fill=(255, 255, 255, int(255 * opacity)), font=font)
+    return watermark
+
+
+
+def add_logo_watermark(image, logo_path, position, opacity=0.5, scale=0.2):
+    """
+    Add a logo watermark to the given image.
+    """
+    base = image.convert("RGBA")
+    logo = Image.open(logo_path).convert("RGBA")
+    logo_width = int(base.width * scale)
+    aspect_ratio = logo.height / logo.width
+    logo_height = int(logo_width * aspect_ratio)
+    logo = logo.resize((logo_width, logo_height))
+
+
+    alpha = logo.split()[3]
+    alpha = ImageEnhance.Brightness(alpha).enhance(opacity)
+    logo.putalpha(alpha)
+
+    margin = 10
+    positions = {
+        "Top-Left": (margin, margin),
+        "Top-Right": (base.width - logo_width - margin, margin),
+        "Bottom-Left": (margin, base.height - logo_height - margin),
+        "Bottom-Right": (base.width - logo_width - margin, base.height - logo_height - margin),
+        "Center": ((base.width - logo_width) // 2, (base.height - logo_height) // 2)
+    }
+    pos = positions.get(position, positions["Bottom-Right"])
+
+    base.paste(logo, pos, logo)
+    return base.convert("RGB")