Community Plugin
View plugin on GitHubGatsby Plugin Fix FOUC
Gatsby Plugin Fix FOUC is a plugin that solves flash of unstyled content.
Supports Gatsby v3 - v5
Without Plugin | With Plugin |
---|---|
How Does It Work
Adds a data attribute to the <body>
element that hides the page until the initial render of Gatsby App is done on the client, so that the awful flicker is not shown to you.
This approach is also used by Google. Does not re-rendering and has no impact on performance and accessibility.
Trade-Off
Lighthouse scores will decrease. (First Contentful Paint, Largest Contentful Paint) as a result, it may affect SEO. (but, Cumulative Layout Shift scores improve.)
You can specify the width that does not hide the screen by setting minWidth
.
Install
yarn add gatsby-plugin-fix-fouc
# or
npm install gatsby-plugin-fix-fouc
Usage
// gatsby-config.js
module.exports = {
plugins: [`gatsby-plugin-fix-fouc`],
};
Advanced
// gatsby-config.ts
import { breakpoints } from "./src/themes";
import type { GatsbyConfig } from "gatsby";
import type { GatsbyPluginFixFoucRefOptions } from "gatsby-plugin-fix-fouc";
const config: GatsbyConfig = {
plugins: [
{
resolve: `gatsby-plugin-fix-fouc`,
options: {
attributeName: "is-loading",
minWidth: breakpoints.values.sm,
timeout: 3000,
} as GatsbyPluginFixFoucRefOptions,
},
],
};
export default config;
Options
Property | Type | Default | Description |
---|---|---|---|
attributeName |
string | gatsby-plugin-fix-fouc-is-loading |
The data-* attribute name to be added. |
minWidth |
number | 0 |
The minimum width (px) of hides the page. If not set, hides regardless of width. |
timeout |
number | 4000 |
The time (milliseconds) of the timer should wait before shows the page as a fallback even if the initial render is not done. |
Contributors
Thanks goes to these wonderful people (emoji key):
Oishi Takanori 🤔 💻 🚧 💬 📖 👀 |
LICENCE
MIT License