A simple area where users drop "broken" or heavy images.
In many "Anvil" projects (or similar low-code platforms), developers often upload raw photos from cameras that are 5MB+. This feature ensures the app stays fast and responsive by "fixing" those assets automatically.
# Server Module import anvil.media from PIL import Image import io @anvil.server.callable def fix_image_asset(file): # 1. Load the uploaded media img_bytes = file.get_bytes() img = Image.open(io.BytesIO(img_bytes)) # 2. The "Fix": Resize if too large (e.g., max 1920px) max_size = (1920, 1080) img.thumbnail(max_size, Image.Resampling.LANCZOS) # 3. Convert to WebP for optimization out_io = io.BytesIO() img.save(out_io, format="WEBP", quality=80) # 4. Return as Anvil Media object return anvil.BlobMedia("image/webp", out_io.getvalue(), name="fixed_image.webp") Use code with caution. 3. UI/UX Component A simple area where users drop "broken" or heavy images
Should I provide the for a drag-and-drop interface, or
If you are building this within , you can use a Server Module with the Pillow library to "fix" the images. # Server Module import anvil
Removes unnecessary EXIF data to reduce file size without losing quality. 2. Technical Implementation (Python/Anvil Example)
This feature automatically repairs broken image links, optimizes file sizes for web performance, and ensures color consistency across different display types. 1. Key Functionalities Convert to WebP for optimization out_io = io
Creates a low-res blurred version (LQIP) to show while the main image loads.