How to Extract Lazy-Loaded Images
Master the art of extracting lazy-loaded images without scrolling through miles of infinite-scroll webpages.
Key Takeaways
- Lazy-loaded images typically store their real URL in `data-src`, `data-original`, or `data-lazy` attributes.
- The initial `src` attribute is usually a 1x1 transparent GIF or low-res placeholder.
- ImgEx automatically evaluates lazy loading attributes to extract the true high-resolution image.
Extract full-res lazy-loaded photos
Bypass low-res placeholders and capture master image assets effortlessly.
Lazy loading is an essential web performance technique: it delays loading images until they are about to scroll into the user's viewport. But for scrapers and downloaders, lazy loading often results in downloading blurry low-res placeholders. Here is how to extract the full original assets.
How Lazy Loading Works in HTML
Before an image enters the viewport, developers set the `src` to a 1x1 placeholder and store the actual image URL in custom data attributes:
<!-- Typical lazy-loaded image markup --> <img src="data:image/svg+xml;base64,PHN2Zy..." data-src="https://cdn.example.com/products/full-resolution.webp" data-srcset="https://cdn.example.com/products/full-resolution.webp 2x" class="lazyload" alt="Product Photo" />
How ImgEx Solves the Lazy Loading Problem
ImgEx parses `data-src`, `data-original`, `data-lazy`, `data-lazy-src`, and `data-hi-res-src` attributes, giving you instant access to the master resolution file without needing to scroll.
Frequently Asked Questions
What if the page uses native loading='lazy'?
Native browser lazy loading still uses standard `src` or `srcset` attributes, which ImgEx parses with zero issues.