How to gif (2025 edition)
Back in 2022 I published the article GIFs Without the .gif: The Most Performant Image and Video Options Right Now on CSS Tricks. Certain information in that post is now out of date: The AV1 video codec is supported in all browsers. Animated AVIF is supported in all browsers (albeit with issues in Safari). WebM and the VP9 video codec are supported in all browsers. The image-set CSS property is sup
Youtube video embedding harm reduction
Embedding external content on a website in the current enshittocene period is more annoying than ever, so here is a copy-pasteable snippet to embed a youtube video while reducing its tracking and nuisance capabilities as much as possible: <iframe credentialless allowfullscreen referrerpolicy="no-referrer" sandbox="allow-scripts allow-same-origin" allow="accelerometer 'none'; ambient-light-sensor '
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Replace animated GIFs with video for faster page loads  | Articles  | web.dev
Have you ever seen an animated GIF on a service like Imgur or Gfycat, inspected it in your dev tools, only to find out that GIF was really a video? There's a good reason for that. Animated GIFs can be downright huge. Thankfully, this is one of those areas of loading performance where you can do relatively little work to realize huge gains! By converting large GIFs to videos, you can save big on us
HTML5 Video
HTML5 Video Events and API This page demonstrates the new HTML5 video element, its media API, and the media events. Play, pause, and seek in the entire video, change the volume, mute, change the playback rate (including going into negative values). See the effect on the video and on the underlying events and properties. load() play() pause() currentTime+=10 currentTime-=10 currentTime=50 playbackR
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Autoplay policy in Chrome  | Blog  | Chrome for Developers
New behaviors As you may have noticed, web browsers are moving towards stricter autoplay policies in order to improve the user experience, minimize incentives to install ad blockers, and reduce data consumption on expensive and/or constrained networks. These changes are intended to give greater control of playback to users and to benefit publishers with legitimate use cases. Chrome's autoplay poli
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