Mahmood Mamdani on Power and Belonging – NPR
Here’s a breakdown of the HTML code you provided, focusing on the images and their associated facts:
Frist Image (Book Cover)
This section defines an image using the <picture> element, which allows for providing multiple image sources based on browser support and screen size.
* <picture>: The container for the different image sources.
* <source data-original="..."> type="image/webp": This suggests the browser should use a WebP image if it supports the format. data-original holds the URL of the WebP version.
* <source data-original="..."> type="image/jpeg": This provides a fallback JPEG image if the browser doesn’t support WebP.
* <img src="..." alt="SLOWPOISONCOVER.jpg"/>: This is the actual <img> tag. It’s set to display the JPEG version by default. The alt attribute provides choice text for accessibility (important for screen readers and if the image fails to load).
Image URL:
the core image URL (for both WebP and JPEG) is:
http://npr-brightspot.s3.amazonaws.com/33/72/12f6b8d7465b9dca3324fc6ecc04/slowpoisoncover.jpg
The rest of the URL parameters are for resizing, quality, and format conversion by a service called “dims3” (likely a content delivery network or image processing service used by NPR).
Second Image (Uganda election)
This section is very similar to the first, also using the <picture> element for responsive images.
* <source srcset="...">: The srcset attribute provides a list of image URLs with different sizes. The browser will choose the most appropriate size based on the screen resolution.
* data-original="...": The original, full-resolution image URL.
* data-template="...": A template URL that allows the image service to dynamically resize and format the image based on the {width}, {quality}, and {format} placeholders.
* data-format="webp": Indicates that the preferred format is WebP.
* class="img lazyOnLoad": Suggests the image is loaded lazily (only when it’s about to come into view), which can improve page load performance.
* type="image/webp": Specifies the image type.
Image URL:
The core image URL is:
https://media.npr.org/assets/img/2021/01/14/gettyimages-1230586492_sq-65963b8d232a277ad804c42e3253dba636ffe98f.jpg
Key Observations:
* Responsive Images: Both image sections use the <picture> element and srcset attributes to provide different image sizes for different devices.
* WebP Support: The code attempts to use WebP images for better compression and quality, but falls back to JPEG if the browser doesn’t support webp.
* Lazy Loading: the second image uses lazy loading to improve performance.
* NPR’s Image Infrastructure: NPR uses a combination of Amazon S3 for storage and a service (“dims3” and possibly others) for image processing and delivery.
* Data Attributes: The data-original, data-template, and data-metrics-ga4 attributes are used to store additional information about the images, likely for JavaScript