Base64 to File Converter

import base64

# Decode Base64 string to file
def base64_to_file(b64: str, output_path: str):
    # Strip data URI prefix if present
    if "," in b64:
        b64 = b64.split(",", 1)[1]
    with open(output_path, "wb") as f:
        f.write(base64.b64decode(b64))

# Usage
base64_to_file("iVBORw0KGgo...", "image.png")

# Decode with MIME type detection
def base64_to_file_safe(b64: str, output_path: str):
    import re
    # Extract MIME type from data URI
    mime_match = re.match(r"data:([^;]+)", b64)
    if mime_match:
        mime = mime_match.group(1)
        print(f"Detected MIME: {mime}")
    if "," in b64:
        b64 = b64.split(",", 1)[1]
    with open(output_path, "wb") as f:
        f.write(base64.b64decode(b64))