网站必须要有SSL证书吗？没有一件事情是绝对的，任何东西都是建立在需求上，网站是否有需要安装SSL证书主要还是看用户的需求。如何判断我的网站是否需要安装SSL证书呢？可以来看看SSL证书的功能，是否可解决目前网站的需求。
SSL证书功能一、验证网站真实身份，进行https数据加密
网站部署SSL证书之后，网站实现https加密，保护网站数据安全，比如信用卡号、密码等。还可以验证网站的真实性，树立可信赖的企业形象，辨别钓鱼网站，可以向客户证明网站是值得信赖的合法网站。
这对于金融类、拥有在线交易等平台，安装SSL证书可让用户放心交易；医院、银行类充满用户信息的网站具有很大的意义，可以保护网站数据、用户信息不被泄露。或者其他有需要进行数据加密的网站。
SSL证书功能二、消除“不安全”提示 显示绿色安全小锁
早年间，谷歌等主流浏览器就对未安装SSL证书的网站提示“不安全”红色警告信息，大力鼓励大家安装SSL证书进行https加密，显示绿色安全小锁表示安全。
这对于外贸类网站是一个致命的打击，不仅仅造成流量流失、而且对品牌也有一定的影响，所以说，外贸类网站安装SSL证书是非常有必要的，
SSL证书功能三、有利于SEO优化 提升网站排名
百度、谷歌等搜索引擎已公开表示对安装SSL证书的网站表示友好的态度，优先展示https网站，这对于SEO来说，是一个非常好的机会。这一点的话，适用于所有需要SEO提升流量的网站。
SSL证书功能四、小程序、APP的必要条件
小程序开发和APP都是需要https接口的，也就是说需要SSL证书保证安全。
SSL证书功能五、信息等级保护
SSL证书申请可帮助信息安全等级保护测评，可助力企业等保合规。
所以说，网站需不需要安装SSL证书主要是看网站的需求，小小一张SSL证书，功能强大，可解决多方安全需求，是目前有效的网络安全解决方案之一。
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