This HTML snippet represents a responsive image using the <picture> element and <source> tags. Let’s break it down:
* <picture> element: This element allows you to provide multiple image sources, and the browser will choose the most appropriate one based on factors like screen size, resolution, and image format support.
* <source media="(-webkit-min-device-pixel-ratio: 2) and (min-resolution: 120dpi)" ...>: This is the first <source> tag.
* media="(-webkit-min-device-pixel-ratio: 2) and (min-resolution: 120dpi)": This is a media query. It specifies that this source shoudl be used if the device has a pixel ratio of 2 or greater and a minimum resolution of 120 DPI (dots per inch). This is commonly used for Retina displays or high-density screens.
* data-srcset="...": This attribute contains a comma-separated list of image URLs along with their widths. The browser uses this information to choose the best image size for the current viewport. For example, https://mf.b37mrtl.ru/files/2026.01/xxs/696d09b620302777406e0f00.jpg 560w means the image at that URL is 560 pixels wide.
* srcset="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAJCAQAAACRI2S5AAAAEElEQVR42mNkIAAYRxWAAQAG9gAKqv6+AwAAAABJRU5ErkJggg==": This is a fallback image. It’s a very small, placeholder image encoded as a base64 string. It’s used if the browser doesn’t support <picture> or the media query doesn’t match.
* <source data-srcset="..." ...>: This is the second <source> tag.
* data-srcset="...": Similar to the first source, this provides a set of image URLs and widths. This source doesn’t have a media attribute, meaning it’s the default source if no other media queries match.
* srcset="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAJCAQAAACRI2S5AAAAEElEQVR42mNkIAAYRxWAAQAG9gAKqv6+AwAAAABJRU5ErkJggg==": Again, a fallback image.
* <!--[if IE 9]></video><![endif]-->: This is a conditional comment specifically for Internet Explorer 9. It’s likely a workaround for a bug or compatibility issue in IE9 related to the <picture> element. The </video> tag is probably a remnant of an attempt to use a video element as a fallback, but it’s not a valid use case here.
In summary:
This code aims to deliver the most appropriate image size for the user’s device and screen resolution. It
