manifest
on html
is obsolete
Web Standard
Description
The manifest
attribute on the html
element is obsolete.
Help
The manifest-based application cache feature is obsolete. Consider using service workers instead.
Applicable standards
Change history
- 6.48 Mar 2023 Removed from W3 validator in October 2022.
- 5.24 Dec 2016 Added to W3 validator in December 2016.
This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.
Rule ID: W3cHtml5ObsoleteAttributeHtmlManifest