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Jerkmate
https://seositecheckup.com/tools/deprecated-html-tags-test
Deprecated HTML Tags Test | SEO Site Checkup
Spot legacy HTML tags like font, center, and marquee on the page being tested, with modern CSS and semantic replacements for cleaner, future-proof markup.
test seo sitedeprecated htmltagscheckup
https://www.seoptimer.com/deprecated-html-tags
Deprecated HTML Tags Checker - SEOptimer
SEOptimer’s Deprecated HTML Tags Checker scans your webpage for outdated HTML tags that may no longer function correctly or could disrupt your page’s execution
deprecated htmltags checkerseoptimer
https://eslint.vuejs.org/rules/no-deprecated-html-element-is
vue/no-deprecated-html-element-is | eslint-plugin-vue
disallow using deprecated the `is` attribute on HTML elements (in Vue.js 3.0.0+)
deprecated htmleslint pluginvueelement