Examine source code of Mark My Search

{
  "manifest_version": 3,
  "name": "Mark My Search",
  "description": "Highlight searched keywords. Find matches instantly.",
  "version": "1.15.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c87dcad-dbbd-4be1-b07b-b6d0739b0aec}"
    }
  },
  "icons": {
    "48": "/icons/mms.svg",
    "96": "/icons/mms.svg"
  },
  "permissions": [
    "tabs",
    "scripting",
    "storage",
    "search",
    "contextMenus"
  ],
  "optional_permissions": [
    "bookmarks"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "background": {
    "type": "module",
    "scripts": [
      "/dist/background.mjs"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "/dist/entrypoints/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "/pages/options.html"
  },
  "action": {
    "default_icon": "/icons/mms.svg",
    "default_title": "Mark My Search",
    "default_popup": "/pages/popup.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "/icons/*.svg",
        "/dist/content.mjs",
        "/dist/entrypoints/content.js",
        "/dist/modules/*.mjs"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "commands": {
    "open-popup": {
      "description": "Open the popup"
    },
    "open-options": {
      "description": "Open the options page"
    },
    "toggle-research-tab": {
      "suggested_key": {
        "default": "Alt+M"
      },
      "description": "Find in current tab"
    },
    "toggle-research-global": {
      "suggested_key": {
        "default": "Alt+Shift+J"
      },
      "description": "Enable/disable automatic web search marking"
    },
    "toggle-bar": {
      "description": "Show/hide toolbar"
    },
    "toggle-highlights": {
      "suggested_key": {
        "default": "Alt+Shift+D"
      },
      "description": "Show/hide highlighting"
    },
    "toggle-select": {
      "description": "Enable/disable sticky keyword jumping mode"
    },
    "focus-term-append": {
      "suggested_key": {
        "default": "Alt+Period"
      },
      "description": "Focus input for appending a keyword"
    },
    "terms-replace": {
      "description": "Replace keywords with detected search keywords"
    },
    "step-global": {
      "suggested_key": {
        "default": "F2"
      },
      "description": "Step to and select next highlight"
    },
    "step-global-reverse": {
      "suggested_key": {
        "default": "Shift+F2"
      },
      "description": "Step to and select previous highlight"
    },
    "advance-global": {
      "suggested_key": {
        "windows": "Alt+A",
        "default": "Alt+Space"
      },
      "description": "Jump to next highlight block"
    },
    "advance-global-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+A",
        "default": "Alt+Shift+Space"
      },
      "description": "Jump to previous highlight block"
    },
    "select-term-0": {
      "suggested_key": {
        "windows": "Alt+1",
        "default": "Alt+Shift+1"
      },
      "description": "Jump to next (1st keyword)"
    },
    "select-term-1": {
      "suggested_key": {
        "windows": "Alt+2",
        "default": "Alt+Shift+2"
      },
      "description": "Jump to next (2nd keyword)"
    },
    "select-term-2": {
      "suggested_key": {
        "windows": "Alt+3",
        "default": "Alt+Shift+3"
      },
      "description": "Jump to next (3rd keyword)"
    },
    "select-term-3": {
      "suggested_key": {
        "windows": "Alt+4",
        "default": "Alt+Shift+4"
      },
      "description": "Jump to next (4th keyword)"
    },
    "select-term-4": {
      "suggested_key": {
        "windows": "Alt+5",
        "default": "Alt+Shift+5"
      },
      "description": "Jump to next (5th keyword)"
    },
    "select-term-5": {
      "suggested_key": {
        "windows": "Alt+6",
        "default": "Alt+Shift+6"
      },
      "description": "Jump to next (6th keyword)"
    },
    "select-term-6": {
      "suggested_key": {
        "windows": "Alt+7",
        "default": "Alt+Shift+7"
      },
      "description": "Jump to next (7th keyword)"
    },
    "select-term-7": {
      "suggested_key": {
        "windows": "Alt+8",
        "default": "Alt+Shift+8"
      },
      "description": "Jump to next (8th keyword)"
    },
    "select-term-8": {
      "suggested_key": {
        "windows": "Alt+9",
        "default": "Alt+Shift+9"
      },
      "description": "Jump to next (9th keyword)"
    },
    "select-term-9": {
      "suggested_key": {
        "windows": "Alt+0",
        "default": "Alt+Shift+0"
      },
      "description": "Jump to next (10th keyword)"
    },
    "select-term-0-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+1",
        "default": "Ctrl+Shift+1"
      },
      "description": "Jump to previous (1st keyword)"
    },
    "select-term-1-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+2",
        "default": "Ctrl+Shift+2"
      },
      "description": "Jump to previous (2nd keyword)"
    },
    "select-term-2-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+3",
        "default": "Ctrl+Shift+3"
      },
      "description": "Jump to previous (3rd keyword)"
    },
    "select-term-3-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+4",
        "default": "Ctrl+Shift+4"
      },
      "description": "Jump to previous (4th keyword)"
    },
    "select-term-4-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+5",
        "default": "Ctrl+Shift+5"
      },
      "description": "Jump to previous (5th keyword)"
    },
    "select-term-5-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+6",
        "default": "Ctrl+Shift+6"
      },
      "description": "Jump to previous (6th keyword)"
    },
    "select-term-6-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+7",
        "default": "Ctrl+Shift+7"
      },
      "description": "Jump to previous (7th keyword)"
    },
    "select-term-7-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+8",
        "default": "Ctrl+Shift+8"
      },
      "description": "Jump to previous (8th keyword)"
    },
    "select-term-8-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+9",
        "default": "Ctrl+Shift+9"
      },
      "description": "Jump to previous (9th keyword)"
    },
    "select-term-9-reverse": {
      "suggested_key": {
        "windows": "Alt+Shift+0",
        "default": "Ctrl+Shift+0"
      },
      "description": "Jump to previous (10th keyword)"
    }
  }
}