Backspace to go Back

manifest.json

{
  "manifest_version": 3,
  "name": "Backspace to go Back",
  "version": "1.2.1.0",
  "author": "The Don",
  "description": "Go to previous page when clicking backspace button",
  "action": {
    "default_icon": {
      "48": "icon48.png",
      "64": "icon64.png",
      "128": "icon128.png",
      "256": "icon256.png"
    },
    "default_title": "Template popup",
    "default_popup": "./adCard/card.html"
  },
  "icons": {
    "48": "icon48.png",
    "64": "icon64.png",
    "128": "icon128.png",
    "256": "icon256.png"
  },
  "background": {
    "service_worker": "./background.js"
  },
  "options_page": "./donate-honor/index.html",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentscript.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}