By Barbara Bermes
A useful ebook on site functionality for net builders, concentrating almost always on front-end functionality development. It covers lots of stable thought, yet can be jam-packed with precious, actual global tricks and information that you should use in your websites today.
Topics lined include:
- User event, layout and performance
- Measuring and tracking performance
- Setting up a web page weight budget
- Network and server improvements
- Optimizing photos and video
- Optimizing scripts and 3rd celebration content
- Lean DOM operations
The ebook additionally comes with a convenient "cheat sheet" summarizing a few of the key tips contained in the book.
Read or Download Lean Websites PDF
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Additional info for Lean Websites
Five you will see that that together with a comparatively uncomplicated and restricted personality set has a small effect, whereas determine 7. 6 indicates that together with a number of fonts with a number of units has a far better effect: determine 7. five. Google Fonts carrier with functionality gauge determine 7. 6. Google Fonts provider with functionality gauge, displaying a functionality alert With Google fonts, in the event you recognize that you just merely want one be aware in a selected net font, you should use the textual content parameter to specify simply the characters you wish. through the use of personality subsetting, you warrantly the simplest optimization for the font, as you simply request the characters for the categorical observe: as soon as you have settled on one (or a couple of) internet font, be sure you asynchronously comprise it to prevent render blockading. notwithstanding, if utilizing asynchronous concepts, you run into the chance of revealing your clients a FOUT (flash of unstyled text). such a lot browsers have followed FOUT. Chrome and Firefox proportion a similar behaviour whilst facing loading of customized fonts: they timeout after three seconds and use a fallback font, and in simple terms re-render the textual content as soon as the font obtain has accomplished. IE instantly renders the content material with the fallback font, re-rendering as soon as the customized font is loaded. Safari suspends font rendering until eventually the font has thoroughly downloaded. Google has labored including TypeKit to supply a performant net Font Loader to strive against FOUT, which we will speak about subsequent. net Font Loader the net Font Loader (WFL) offers extra regulate over associated fonts utilizing the @font-face characteristic. the assumption is to assist prioritize those assets—for instance, by means of scheduling whilst to obtain the font, or how the font may be rendered (synchronously or asynchronously). It fights the FOUT impression by way of first wrapping the full HTML content material in a wf-loading type. The content material of wf-loading is hidden firstly. as soon as the fonts have loaded, the content material visibility is introduced again with the wf-active category, together with a fade-in impression. the instance lower than exhibits Open Sans and fulfill being loaded through WFL: additional info on configuration, and the way to incorporate TypeKit fonts, are available within the WFL documentation. observe: Font Load occasions API the recent Font Load occasions API—currently in draft mode—will finally supply complete keep watch over over dealing with how and while fonts are loaded and rendered. in spite of the fact that, till this API is totally supported in all browsers, I recommend you employ WFL. internet Font counsel consider carefully sooner than including customized fonts, except they're crucial to your company's model.