Lazy load embedded YouTube videos

-

This is a very clever idea via Arthur Corenzan. Rather than use the default YouTube embed, which adds a crapload of resources to a page whether the user plays the video or not, use the little tiny placeholder webpage that is just an image you can click that is linked to the YouTube embed.

It still behaves essentially exactly the same: click, play video in place.

The trick is rooted in srcdoc, a feature of <iframe> where you can put the entire contents of an HTML document in the attribute. It's like inline styling but an inline-entire-documenting sort of thing. I've used it in the past when I embedded MailChimp-created newsletters on this site. I'd save the email into the database as a complete HTML document, retrieve it as needed, and chuck it into an <iframe> with srcdoc.

Arthur credits Remy for a tweak to get it working in IE 11 and Adrian for some accessibility tweaks.

I also agree with Hugh in the comments of that post. Now that native lazy loading has dropped in Chrome (see our coverage) we might as well slap loading="lazy" on there too, as that will mean no requests at all if it renders out of viewport.

I'll embed a demo here too:

See the Pen
Lazy Loaded YouTube Video by Chris Coyier (@chriscoyier)
on CodePen.

Direct Link to Article — Permalink

The post Lazy load embedded YouTube videos appeared first on CSS-Tricks.



from CSS-Tricks https://ift.tt/2M5iiQP

Comments

Post a Comment

Popular posts from this blog

20 Free Professional Resume Cover Letter Format Templates for Jobs 2020

-
Image
Are you getting ready to apply to jobs and want to make a cover letter? Using a professional cover letter template will save you time and ensure that you've got a professional design. This cover letter template and hundreds more can be found on Envato Elements. Using a premium cover letter template can not only save you time, but you'll have a high-quality template for your letter. All you need to do is add the information you'd like to and customize the template and you're done. In this article, we'll explore some of the best premium and free cover letter templates available online. Find the Best Premium Resume Cover Letter Templates on Envato Elements (With Unlimited Use)  Envato Elements is an all-you-can-download resources for professionals and creatives, including good cover letter templates . With Elements, you pay a low monthly fee to get access to: resume and CV letter templates stock photos and royalty free music WordPress themes and more ...
Read more

How to Create Gantt Charts in PowerPoint With PPT Templates

-
Image
You might not think of Microsoft PowerPoint as a project management tool. But there's a reason it's used for project updates and by project teams. The ease-of-use and flexibility of PowerPoint work for any project management professional.  It's easy to create a Gantt Chart in PowerPoint (PPT) once you know how. When it comes to managing projects, you need tools to make them manageable. That includes process charts to help your team collaborate efficiently. Project management professionals often turn to  Gantt charts  to visualize the parts of the project. In this tutorial, you'll learn how to create a Gantt chart in PowerPoint . You'll learn how to use an impressive template to build a Gantt chart that ensures that every member of your project team knows how their part in the project fits into the bigger picture. Let's dive in! What's a Gantt Chart? Imagine you're building something that requires collaboration with others. That could be a website, ...
Read more

32+ Professional PowerPoint Templates: For Better Business PPT Presentations

-
Image
Do you have a business presentation PowerPoint to give this week? Is the deadline for your pitch approaching fast? Or, is the clock ticking down to the date of your speaking engagement? If so, your needs are immediate. It's critical that you create a professional presentation that's designed for business results. Professional PowerPoint workflow - from design to presentation. ( Influencer PPT Template ) Designing a PowerPoint presentation from scratch is difficult. It takes time to put together the right slide layouts that work cohesively together. Also, make infographics, icons, fonts, animations. Match all these elements to your message best. It’s a whole lot quicker to grab a  professional PowerPoint template  to work with from the get-go.   The best business presentation PPT templates like The X Note help you craft your content in less time than ever. Are you looking for professional PowerPoint templates ? A high-quality presentation design gives you ...
Read more