https://sustainabletech.se/
Sustainable Tech | Test your web page carbon footprint here
If the internet were a country, it would be the 4th largest polluter in the world. Test your web page carbon footprint here.
your web pagesustainable techcarbon footprinttest
https://www.ndbc.noaa.gov/widgets/
NDBC - Observations Widget for Your Web Page
National Data Buoy Center - Recent Observations Widget Setup Page.
your web pageobservationswidget
https://developer.mozilla.org/en-US/docs/Web/HTML/How_to/Add_JavaScript_to_your_web_page
Add JavaScript to your web page - HTML | MDN
Take your webpages to the next level by harnessing JavaScript. Learn in this article how to trigger JavaScript right from your HTML documents.
your web pageaddjavascripthtmlmdn
https://www.thesitewizard.com/webdesign/htmlvalidation.shtml
What is HTML and CSS Validation? Should You Validate Your Web Page? (thesitewizard.com)
HTML Validation, CSS Validation: Should you validate your web page? Benefits/Costs of validating your web pages
what is htmlyour web page