- ENSURE TEXT REMAINS VISIBLE DURING WEBFONT LOAD WORDPRESS HOW TO
- ENSURE TEXT REMAINS VISIBLE DURING WEBFONT LOAD WORDPRESS PLUS
The "race" between the first paint of page content, which can be done shortly after the render tree is built, and the request for the font resource is what creates the "blank text problem" where the browser might render page layout but omits any text.īy preloading WebFonts and using font-display to control how browsers behave with unavailable fonts, you can prevent blank pages and layout shifts due to font loading. After the font is available, the browser paints the text pixels.
If the font is not yet available, the browser may not render any text pixels.The browser performs layout and paints content to the screen.Font requests are dispatched after the render tree indicates which font variants are needed to render the specified text on the page.The browser constructs the CSSOM after all of the CSS content is received and combines it with the DOM tree to construct the render tree.The browser discovers CSS, JS, and other resources and dispatches requests.The browser begins parsing the HTML response and constructing the DOM.The browser requests the HTML document.As a result, font requests are delayed well after other critical resources, and the browser may be blocked from rendering text until the resource is fetched. The browser must construct the render tree, which is dependent on the DOM and CSSOM trees, before it knows which font resources it needs to render the text. Lazy loading of fonts carries an important hidden implication that may delay text rendering. However, if you're not careful, it can also create a performance bottleneck in the critical rendering path and delay text rendering. Given these declarations, the browser figures out the required subsets and variants and downloads the minimal set required to render the text, which is very convenient. For example unicode subsets, and distinct style variants.
To address the problem of large files containing all variants, the CSS rule is specifically designed to allow you to split the font family into a collection of resources.
ENSURE TEXT REMAINS VISIBLE DURING WEBFONT LOAD WORDPRESS HOW TO
In this post you will find out how to optimize loading of WebFonts so visitors only download what they will use.
ENSURE TEXT REMAINS VISIBLE DURING WEBFONT LOAD WORDPRESS PLUS
Automated testing for WebFont loading behavior with LighthouseĪ "full" WebFont that includes all stylistic variants, which you may not need, plus all the glyphs, which may go unused, can easily result in a multi-megabyte download.
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