manifest.json

{
    "manifest_version": 3,
    "name": "Buttercup",
    "version": "0.0.26",
    "description": "Replace YouTube auto captions with OpenAI Whisper-generated ones",
    "permissions": ["activeTab", "storage", "scripting"],
    "host_permissions": ["https://www.youtube.com/*", "https://buttercup.igerman.cc/*", "https://sanchit-gandhi-whisper-jax.hf.space/*"],
    "content_scripts": [
        {
            "matches": ["*://youtube.com/*", "*://*.youtube.com/*", "*://youtu.be/*"],
            "js": ["content.js"],
            "run_at": "document_start"
        }
    ],
    "web_accessible_resources": [
        {
            "resources": ["buttercup.js"],
            "matches": ["<all_urls>"]
        }
    ],
    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "16": "icons/icon16.png",
            "32": "icons/icon32.png",
            "48": "icons/icon48.png",
            "128": "icons/icon128.png"
        }
    },
    "icons": {
        "16": "icons/icon16.png",
        "32": "icons/icon32.png",
        "48": "icons/icon48.png",
        "128": "icons/icon128.png"
    }
}