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February 8, 2026 Lucas Fernandez – World Editor World

This code snippet represents an <picture> element with multiple <source> elements, designed for responsive images.lets break it down:

Purpose:

The <picture> element allows you to provide different image sources based on the user’s device characteristics (like screen size, resolution, and pixel density). This is crucial for optimizing image delivery and improving page load times,especially on mobile devices.

Key Components:

* <picture>: The container for the responsive image setup.
* <source media="...">: Each <source> element specifies an image source and the conditions (using the media attribute) under which that source should be used.
* data-srcset: this attribute within the <source> tag is the core of the responsiveness. It lists multiple image URLs along with their widths (e.g., https://mf.b37mrtl.ru/files/2026.01/xxs/697230192030275789181692.jpg 280w). The browser will choose the most appropriate image based on the media attribute and the device’s screen size.
* srcset="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAJCAQAAACRI2S5AAAAEElEQVR42mNkIAAYRxWAAQAG9gAKqv6+AwAAAABJRU5ErkJggg==": this is a fallback image. It’s a tiny, clear PNG image encoded as a base64 string. It’s displayed if the browser doesn’t support the <picture> element or if none of the <source> conditions match. It’s a placeholder to prevent broken image icons.
* <!--[if IE 9]></video><![endif]-->: This is a conditional comment specifically for Internet Explorer 9. It attempts to close a <video> tag, which is likely a remnant of a previous implementation or a bug. It’s generally safe to ignore, but it suggests the code might have been adapted from a different context.

How it effectively works:

  1. Browser Evaluation: The browser examines the <source> elements in order.
  2. media Query Matching: For each <source>, the browser checks if the media attribute’s conditions are met. For example:

* media="(-webkit-min-device-pixel-ratio: 2) and (min-resolution: 120dpi)" targets devices with high pixel density (like Retina displays).

  1. Image Selection: If a media query matches, the browser selects the first image URL from the data-srcset attribute of that <source>.
  2. Fallback: If no media query matches, the browser displays the image specified in the srcset attribute of the <picture> element (the base64 encoded PNG).

Image URLs and Sizes:

The image URLs point to a server (mf.b37mrtl.ru)