What is SVG fallback?

Image fallback. This is what most people think of as an SVG fallback: a PNG or GIF image that represents the same graphic, just with a larger file size and poorer resolution.

What is a fallback image?

By adding a fallback image, you can set a branded image to be used when no post thumbnail is found. This allows you to make sure that all your articles have a post thumbnail.

How does old browser support SVG?

Some older browsers like IE8 and old Android browsers don’t support the use of SVG images so its a good idea to detect the support with Modernizer and use a PNG (Portable Network Graphic) as a replacement. Yes, this means for every SVG a companion PNG file will need to be created.

How do I add a fallback image?

Place your image in a container (it might already be in one). Make the container have the same width and height as the image. Set the fallback image as the background image of the container. Set the remote image as the background image of your img tag.

How do I change a fallback image?

Is onError deprecated?

A “deprecated attribute” warning is shown when using React’s onError attribute on a element. But the onError props is valid in React (see the documentation). However, the HTML onerror attribute is indeed deprecated (see on MDN), but it should not be triggered in JSX code.

Is SVG supported in IE?

SVG (Scalable Vector Graphics) is officially supported by all main web browsers, including Internet Explorer. The support spans into a wide variety of image editor software, particularly Inkscape, which uses SVG as its native format (If you want a refresher on SVG, click here).

Is SVG an XML?

Scalable Vector Graphics (SVG) are an XML-based markup language for describing two-dimensional based vector graphics.

Is IMG Onerror deprecated?

onerror is still valid, and seemingly, they haven’t classified the tag attribute event as deprecated there (in that section) yet, they’re still showing an img attribute example. So you can still use it, but just don’t use it as a tag attribute, you can place it inside a script tag or a separate file.

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