JSPM

hint that that checks if the TypeScript configuration is valid.

hint that that checks if disallowed response headers are sent

Require scripts and styles to use Subresource Integrity

hint that that checks if the web app manifest file is valid

hint for best practices related to the apple-touch-icons

hint thats to check the webpack configuration.

hint for best practices related to the usage of the X-Content-Type-Options response header.

hint for best practices related to the web app manifest's name and short_name members

hint for best practices related to the usage of the Strict-Transport-Security response header

hint for media types (f.k.a. MIME types) related best practices

hint that that checks using Cloudinary's API if images are optimized

hint that that checks using Snyk for vulnerable JavaScript libraries

hint that that checks if the web app manifest file has the correct file extension

hint that that checks if external links disown the opener

hint that that warns against using the BOM character at the beginning of a text file.

hint for HTTP caching related best practices

hint that that checks using axe for accessibility related best practices

hint for best practices related to the meta charset

hint that that checks using SSL Labs for best practices related to the website's SSL configuration

hint for HTTP compression related best practices

hint that that checks if protocol relative URLs are used

hint that that checks if the Babel configuration is valid.

hint for best practices related to the meta viewport

hint for best practices related to HTTP redirects

hint that that checks if HTML document only response headers are sent for other resources

hint for best practices related to usage of the X-UA-Compatible meta tag and response header

hint for best practices related to the usage of the Set-Cookie response header.

hint that that checks if a web app manifest file was specified and it exists

hint that that checks if protocol relative URLs are used

hint that that validates HTML pages using the Nu HTML checker

hint that that checks if a page passes a set performance budget

hint for best practices related to the 'theme-color' meta tag

hint that that warns against using P3P

hint that that validates AMP HTML pages using the AMP Validator

Invalidate the use of CSS inline styles in HTML

webhint hint to validate Microsoft's JSLL usage.