㈠ 我想把微信的头像变成透明的
可以通过使用PS建立一个透明的为图片，然后在微信上传头像时，将该图片无限放大后使用即可以使得微信头像是透明的了，具体的操作方法如下：
1、打开PS软件，点击左上角的文件选择新建按钮。
/iknow-pic.cdn.bcebos.com/c995d143ad4bd11393c37c4855afa40f4bfb05ba"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/c995d143ad4bd11393c37c4855afa40f4bfb05ba?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/c995d143ad4bd11393c37c4855afa40f4bfb05ba"/>
2、在出现的新建对话框中输入如300*300像素，分辨率为300，背景内容选择透明以后点击确定按钮。
/iknow-pic.cdn.bcebos.com/d62a6059252dd42a6dd0cad10c3b5bb5c8eab8eb"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/d62a6059252dd42a6dd0cad10c3b5bb5c8eab8eb?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/d62a6059252dd42a6dd0cad10c3b5bb5c8eab8eb"/>
3、点击PS软件左上角的文件选择存储为按钮。
/iknow-pic.cdn.bcebos.com/bba1cd11728b471003b936b6cccec3fdfc032332"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/bba1cd11728b471003b936b6cccec3fdfc032332?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/bba1cd11728b471003b936b6cccec3fdfc032332"/>
4、在出现的存储为对话框中，将图片的格式选择为PNG后点击保存按钮。
/iknow-pic.cdn.bcebos.com/9825bc315c6034a8d13673fbc4134954082376f0"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/9825bc315c6034a8d13673fbc4134954082376f0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/9825bc315c6034a8d13673fbc4134954082376f0"/>
5、在电脑上登录微信以后，将该透明图片发送到微信。
/iknow-pic.cdn.bcebos.com/caef76094b36acaf46c95c8673d98d1001e99c9b"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/caef76094b36acaf46c95c8673d98d1001e99c9b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/caef76094b36acaf46c95c8673d98d1001e99c9b"/>
6、打开手机微信，将该图片进行保存。
/iknow-pic.cdn.bcebos.com/9a504fc2d56285359cb1185b9fef76c6a7ef6373"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/9a504fc2d56285359cb1185b9fef76c6a7ef6373?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/9a504fc2d56285359cb1185b9fef76c6a7ef6373"/>
7、点击手机上的微信头像。
/iknow-pic.cdn.bcebos.com/3b292df5e0fe992537dfa32a3ba85edf8cb171fd"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/3b292df5e0fe992537dfa32a3ba85edf8cb171fd?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/3b292df5e0fe992537dfa32a3ba85edf8cb171fd"/>
8、在出现的选择图片界面，点击所有图片。
/iknow-pic.cdn.bcebos.com/1e30e924b899a9014376914c12950a7b0208f50d"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/1e30e924b899a9014376914c12950a7b0208f50d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/1e30e924b899a9014376914c12950a7b0208f50d"/>
9、找到保存图片的文件夹后点击进入（该透明图片在手机微信上显示的是纯黑色的）。
/iknow-pic.cdn.bcebos.com/2f738bd4b31c8701a4f8789c287f9e2f0708ff7a"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/2f738bd4b31c8701a4f8789c287f9e2f0708ff7a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/2f738bd4b31c8701a4f8789c287f9e2f0708ff7a"/>
10、进入以后点击刚才保存纯黑色的图片，将手指放在黑色区域以中心为原点不断的放大该图片。
/iknow-pic.cdn.bcebos.com/d0c8a786c9177f3ec9ec36777fcf3bc79e3d56f4"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/d0c8a786c9177f3ec9ec36777fcf3bc79e3d56f4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/d0c8a786c9177f3ec9ec36777fcf3bc79e3d56f4"/>
11、然后点击使用按钮，将该图片作为头像。
/iknow-pic.cdn.bcebos.com/aec379310a55b31907dcb70e4ca98226cffc17a7"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/aec379310a55b31907dcb70e4ca98226cffc17a7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/aec379310a55b31907dcb70e4ca98226cffc17a7"/>
12、回到聊天界面给好友发送消息时即可看到该头像已经是透明的了。
/iknow-pic.cdn.bcebos.com/fd039245d688d43f47b8a489721ed21b0ef43bb3"target="_blank"title="点击查看大图"class="illustration_alink">/iknow-pic.cdn.bcebos.com/fd039245d688d43f47b8a489721ed21b0ef43bb3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/fd039245d688d43f47b8a489721ed21b0ef43bb3"/>
注意事项：
透明的的PNG图片不仅仅可以用于微信头像，在日常的图片处理中涉及到不需要背景色或边框时均可以使用。
㈡ 怎么将网页上的图片改成透明图片
需要把图片做成PNG格式在PS软件里把背景设置成透明然后保存成PNG格式就可以了