How do I extract images from HTML?

Extracting images from HTML involves parsing the HTML document and identifying all <img> tags along with their attributes.

Start by loading the HTML content, either from a local file, URL, or raw HTML string. Use an HTML parser like Cheerio (Node.js), Beautiful Soup (Python), or browser DevTools to parse the document structure.

What to extract:

• Look for <img> tags and extract their src attributes, which contain the image URLs
• Check for responsive images using <picture> tags and srcset attributes, which provide different image versions for different screen sizes
• Background images defined in CSS (background-image property) won't appear in <img> tags, so you may need to parse inline styles or <style> tags
• Lazy-loaded images often use data-src or data-lazy attributes instead of src, so check for these custom attributes as well

Handling URLs:

When extracting, pay attention to relative vs absolute URLs: relative URLs like /images/photo.jpg need to be converted to absolute URLs by combining them with the base domain.

Our Image Extractor automatically handles these cases and provides filtering options to find specific image types or sizes.