Examine source code of DeepL

{
  "manifest_version": 2,
  "name": "To DeepL",
  "version": "3.0.2",
  "description": "Send selected text to DeepL from the context menu or a hotkey. Translate pages faster without copy-paste. DeepL translator shortcut ",
  "icons": {
    "48": "icons/icon.svg"
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "browser_style": true,
    "page": "options/options.html",
    "open_in_tab": false
  },
  "commands": {
    "translate-text": {
      "description": "Send the selected text to DeepL"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f414a35-81bd-422e-aec6-008f81e976e0}"
    }
  }
}