![]() The component will measure the natural size of the container as determined by the CSS on the page, and will render an optimal image for those dimensions. Images can be rendered as a background behind children by using. This behavior will respect any overriding q value passed in via imgixParams and can be disabled altogether with the boolean property disableQualityByDPR. For more information and examples of this technique in action, see this blog post. Since high-DPR images are displayed at a higher pixel density on devices, image quality can be lowered to reduce overall filesize without sacrificing perceived visual quality. This technique is commonly used to compensate for the increased filesize of high-DPR images. import Imgix from "react-imgix" įixed image rendering will automatically append a variable q parameter mapped to each dpr parameter when generating a srcset. If the fluid, dynamic nature explained above is not desired, the width and height can be set explicitly. Either dimension can be an integer or a float. The aspect ratio is specified in the format width:height. For the ar parameter to take effect, ensure that the fit parameter is set to crop. Generating srcsets to resize and crop your image as specified. Without sizes and correct styling the image might render at full-size.Īspect Ratio: A developer can pass a desired aspect ratio, which will be used when Sizes should be set properly for this to work well, and some styling should be used to set the size of the component rendered. This is an example of this responsive behaviour. The component will leverage srcset and sizes to render the right size image for its container. This component acts dynamically by default. If the width and height are known beforehand, it is recommended that they are set explicitly: import Imgix from "react-imgix" Since react-imgix uses srcset and sizes, it allows the browser to render the correctly sized image immediately after the page has loaded. React-imgix also works well on the server. ![]() Width and height known: If the width and height are known beforehand, it is recommended that they are set explicitly: import Imgix from "react-imgix" All of this information has been placed into the srcset and sizes attributes. Since imgix can generate as many derivative resolutions as needed, react-imgix calculates them programmatically, using the dimensions you specify. This will generate HTML similar to the following: Eric Portis' "Srcset and sizes" article goes into depth on how to use the sizes attribute. If your image is not full-bleed, you should use a different value for sizes. Please note: 100vw is an appropriate sizes value for a full-bleed image. If you are not using ES6 modules, you don't have to do anything Usage import Imgix from "react-imgix" įor simply using as you would use an, react-imgix can be used as follows: import Imgix from "react-imgix" If a ES6-module-aware bundler is being used to consume this module, it will pick up an ES6 module version and can perform tree-shaking. This module exports two transpiled versions. A look into how imgix can work with srcset and sizes to serve the right image. Responsive Images with srcset and imgix.Discusses the differences between art direction and resolution switching, and provides examples of how to accomplish art direction with imgix. The primary goal of react-imgix is to make these tools easier for developers to implement, so having an understanding of how they work will significantly improve your react-imgix experience.īelow are some other articles that help explain responsive imagery, and how it can work alongside imgix: This article explains the history of responsive images in responsive design, why they're necessary, and how all these technologies work together to save bandwidth and provide a better experience for users. Low Quality Image Placeholder Technique (LQIP)īefore you get started with react-imgix, it's highly recommended that you read Eric Portis' seminal article on srcset and sizes.React-imgix provides custom components for integrating imgix into React sites and generating images server-side.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |