curl --request POST \
  --url https://api.iotools.cloud/v1/tool/web-resource-hints-generator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "resources": "https://fonts.gstatic.com | preconnect | | anonymous\nhttps://fonts.googleapis.com | preconnect\n/styles/critical.css | preload | style\n/fonts/inter.woff2 | preload | font"
}
'

{
  "tool": "web-resource-hints-generator",
  "tool_version": "1.0.2",
  "outputs": {
    "htmlTags": "<link rel=\"preconnect\" href=\"https://fonts.gstatic.com\" crossorigin>\n<link rel=\"preconnect\" href=\"https://fonts.googleapis.com\">\n<link rel=\"preload\" as=\"style\" href=\"/styles/critical.css\">\n<link rel=\"preload\" as=\"font\" href=\"/fonts/inter.woff2\" crossorigin>",
    "httpHeader": "Link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin\nLink: <https://fonts.googleapis.com>; rel=preconnect\nLink: </styles/critical.css>; rel=preload; as=style\nLink: </fonts/inter.woff2>; rel=preload; as=font; crossorigin",
    "notes": "Line 4: fonts must be fetched with CORS — added crossorigin=\"anonymous\" automatically."
  },
  "credits_used": 5,
  "credits_remaining": null
}