Request Tool HTML Looking for a tool: extracting embedded base64 images from HTML games

[beson]

Hello, I'm looking for a way to extract images from HTML games that embed their images into the main html file. The image data is stored in base64 format inside the html page code. I can manually find the blocks of base64 code and paste them into any online decoder, one image at a time. But it's way too tedious.

I tried to find any programs that could parse the HTML file and convert the base64 code into proper image files, but so far I had no luck.

The closest I got was with a command-line tool

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that has "--extract-media" option that is supposed to do that. However, It only worked with simple html files that I made just for testing, with a few base64 images inside. Extracting from html files from the real games failed. I guess the tool just can't get past all the fancy game scripts code. The actual games I tried it with were Cambion [Chiakipus] and

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.

Does anyone know a tool that can extract the base64 images from HTML files automatically and in bulk?

 

[Broguski13]

Theoretically, You can make a rather simple script in Python to do the trick. Here is a code made by Gemini AI (tested it on Cambion - works perfectly as far as I can tell, attaching screenshots)

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 import re import base64 import os html_file_path = 'your_game.html' # Path to your HTML file output_folder = 'extracted_images' # Folder to save images # Create output folder if it doesn't exist if not os.path.exists(output_folder):    os.makedirs(output_folder) try:    with open(html_file_path, 'r', encoding='utf-8') as f:        html_content = f.read()    # Regex to find base64 images (png, jpeg, gif, svg)    # It captures the format (group 1) and the base64 data (group 2)    pattern = r'data:image/(png|jpeg|gif|webp|svg\+xml);base64,([A-Za-z0-9+/=]+)'    matches = re.findall(pattern, html_content)    if not matches:        print("No embedded base64 images found.")    for i, match in enumerate(matches):        img_type = match[0]        base64_data = match[1]        # Handle potential SVG format naming        if img_type == 'svg+xml':            img_type = 'svg'        elif img_type == 'jpeg': # Use standard jpg extension            img_type = 'jpg'        # Decode the base64 string        try:            # Ensure padding is correct if needed (though regex often captures correctly padded strings)            # missing_padding = len(base64_data) % 4            # if missing_padding:            #    base64_data += '=' * (4 - missing_padding)            image_data = base64.b64decode(base64_data)        except base64.binascii.Error as e:            print(f"Error decoding image {i+1}: {e}. Skipping.")            continue        # Create filename        filename = f"image_{i+1}.{img_type}"        output_path = os.path.join(output_folder, filename)        # Save the image        try:            with open(output_path, 'wb') as img_file:                img_file.write(image_data)            print(f"Saved {output_path}")        except IOError as e:             print(f"Error saving image {i+1} to {output_path}: {e}") except FileNotFoundError:    print(f"Error: HTML file not found at {html_file_path}") except Exception as e:    print(f"An unexpected error occurred: {e}")

If you do not know how to download Python and make this code work you can DM me and I will help you as much as I can (Am vibe-coding using AIs' though so do not expect too much of tutoring)