happytails.ai

Reduced Motion Preview Checker

Open Reduced Motion Preview Checker on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "reduced-motion-preview",
  "category": "accessibility-tools",
  "built": true,
  "requirements": "Input is limited to 200000 characters. Results are computed locally and exported as JSON.",
  "implementation": {
    "fields": [],
    "inputMaxLength": 200000,
    "inputErrorCode": "STRUCTURED_TEXT_TOO_LONG",
    "registrationFamily": "reduced-motion-preview",
    "note": "Check CSS for a prefers-reduced-motion reduction path locally.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 200000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 200,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 200,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Check CSS for a prefers-reduced-motion path when motion is present. Runs locally and returns a reviewable report.

How to use Reduced Motion Preview Checker
  1. Paste the CSS rules.
  2. Run the local check.
  3. Review motion coverage and download the report.

Input is limited to 200000 characters. Results are computed locally and exported as JSON.

Presence check

The checker finds a reduction path. Confirm the resulting experience in a browser with reduced motion enabled.