Chromium HSTS preload
Strict-Transport-Security is an HTTP response header
that signals that browsers should only access the site using HTTPS.
For a higher level of security, it's possible for a domain owner to preload this behavior into participating web browsers. Chromium maintains the HSTS preload list, which is the de facto standard that has been adopted by several browsers. This service checks a domain's status in that list.
domain string — REQUIRED
Possible values: [
If not specified, the default style for this badge is "flat".
One of the named logos (bitcoin, dependabot, gitlab, npm, paypal, serverfault, stackexchange, superuser, telegram, travis) or simple-icons. All simple-icons are referenced using icon slugs. You can click the icon title on simple-icons to copy the slug or they can be found in the slugs.md file in the simple-icons repository. Further info.
The color of the logo (hex, rgb, rgba, hsl, hsla and css named colors supported). Supported for named logos and Shields logos but not for custom logos. For multicolor Shields logos, the corresponding named logo will be used and colored.
Override the default left-hand-side text (URL-Encoding needed for spaces or special characters!)
Background color of the left part (hex, rgb, rgba, hsl, hsla and css named colors supported).
Background color of the right part (hex, rgb, rgba, hsl, hsla and css named colors supported).
HTTP cache lifetime (rules are applied to infer a default value on a per-badge basis, any values specified below the default will be ignored).
Specify what clicking on the left/right of a badge should do. Note that this only works when integrating your badge in an