Chrome扩展加载报错：'icons'值无效问题求助

API 探路者

2026-7-25

Chrome扩展Manifest加载错误："Invalid value for 'icons'"排查方案

核心问题：路径格式错误

你的manifest中图标路径开头使用了斜杠（/），这会被Chrome解析为系统根路径，导致无法定位到扩展目录下的图标文件。Chrome扩展引用本地资源需使用相对路径（以manifest.json所在目录为起点），不能加开头的斜杠。

修正步骤：

调整icons字段的路径：删除每个src值开头的/，比如将"/icons/Google-Chrome-Google-Chrome.16.png"改为"icons/Google-Chrome-Google-Chrome.16.png"
修正action.default_icon的路径：同样去掉开头的/，改为"icons/Google-Chrome-Google-Chrome.16.png"

修正后的完整manifest代码：

{
    "manifest_version": 3,
    "name": "Assessment tool",
    "version": "1.0",
    "description": "Scrapes information from website and performs a set of calculations",
    "icons": [
      {
        "src": "icons/Google-Chrome-Google-Chrome.16.png",
        "sizes": "16x16",
        "type": "image/png"
      },
      {
        "src": "icons/Google-Chrome-Google-Chrome.48.png",
        "sizes": "48x48",
        "type": "image/png"
      },
      {
        "src": "icons/Google-Chrome-Google-Chrome.128.png",
        "sizes": "128x128",
        "type": "image/png"
      }
    ],
    "action": {
      "default_icon": "icons/Google-Chrome-Google-Chrome.16.png",
      "default_title": "Assessment tool",
      "default_popup": "popup.html"
    },
    "host_permissions": [
      "https://www.assessment.co.uk/*"
    ],
    "web_accessible_resources": [
      {
        "resources": [
          "/popup.css",
          "/popup.html",
          "/script.js"
        ],
        "matches": [
          "https://*/*",
          "http://*/*"
        ]
      }
    ]
  }