Use the start
attribute to change the starting point for your ordered lists.
You can use the
element to display quantities. No Javascript/CSS needed.
You can use the download
attribute in your links to download the file instead of navigating to it.
Use the .webp
image format to make images smaller and boost the performance of your website.
Use the poster
attribute to specify an image to be shown while the video is downloading, or until the user hits the play button.
type="search"
Use the type="search"
for your search inputs and you get the “clear” button for free.
To be continued…
via https://markodenic.com/html-tips/