Lazy-Loading Detector

A common pitfall in web scraping is extracting image URLs only to find they are all 1x1 pixel transparent placeholders. This happens because the scraper grabs the `src` attribute before the lazy-loading script has swapped it for the real image. This tool analyzes the page to tell you exactly which attributes (like `data-src`) hold the real links.

We distinguish between native browser lazy loading (`loading="lazy"`) and JavaScript-based solutions. Native lazy loading is scraper-friendly as the `src` often remains valid. JavaScript solutions are trickier and require special handling. Knowing which one is in use allows you to configure your scraping pipeline correctly from the start.

We also check for popular lazy-loading libraries like `Lazysizes`, `Lozad.js`, and `React-Lazy-Load`. Identifying the specific library can often give you documentation on exactly how the image data is stored in the DOM, saving you time reverse-engineering the site.