Warning: Use of undefined constant title - assumed 'title' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 152 如何改变图片大小,详细教您如何改变图片大小
- 分类：win7 发布时间： Warning: Use of undefined constant newstime - assumed 'newstime' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 156 2018年06月12日 17:07:00
以前小编在学校报考计算机等级考试的时候，就是因为照片不符合上传标准而一直上传失败。最后交朋友帮忙才搞定，所以小编事后特地的花时间去学习怎么改变图片大小。那么今天小编就来和你们分享我学会的改变图片大小的方法。
最近小编在刷网页的时候，看到有小伙伴问怎么改变图片的大小。于是知道解决方法的小编我就马不停蹄的来到这儿啦~~下面小编就来告诉你们怎么去改变图片的大小。
首先，找到想要改变的图片，然后鼠标右键点击，然后找到并点击“打开方式”，然后再点“画图”。
修改图片大小电脑图解-1
进入之后，如果觉得图片太大，然后点工具栏的“重新调整大小”。（这时候在屏幕是看不到整张图片的，这个不用理会）
修改图片大小电脑图解-2
然后，有两种调整图片大小的方法，一种是根据百分比，另一种是根据像素。先看百分比的调整方法：先点“百分比”，然后水平和垂直选项默认值是100，假如设置为50，就是调整50%，也就是图片会缩小一半。假如选择150，就是调整150%，图片会扩大1.5倍。百分比的缺点就是你不能判断缩小后图片的尺寸。“保持纵横比”的选项下面讲解。
修改图片大小电脑图解-3
另一种就是根据像素来调整，先点“像素”，这个时候，会发现水平值*垂直值=3264 * 2448，这个就是图片的原始大小。然后根据实际情况，设置图片的大小尺寸，如果将水平改为500，垂直值会自动变为375。这个时候，图片大小和尺寸都已经改变了，可以在屏幕看到整张完整的图片了。
图片大小电脑图解-4
前面提到的“保持纵横比”，这个选项如果打钩，垂直和水平是同等放大和缩小的，这样原来的图片就不会变形。否则，假如你不勾选此选项，水平和垂直的值虽然可以任意更改，但是会造成图片被拉伸了或者压扁了，就失真了。对比如下图所示。
改变图片大小电脑图解-5
更改图片大小电脑图解-6
然后修改完，要点击另存为，一般保存为jpg格式。但注意不要直接保存，因为图片的像素已经低了，如果直接保存，原始图片的像素变小了，假如发现图片改的太小了，想要再放大，由于像素变小，再放大图片就会不清晰，所以用另存为存储图片。
更改图片大小电脑图解-7
最后，我们来看一下修改前后的差别。
改变图片大小电脑图解-8
修改图片大小电脑图解-9
完成以上步骤之后就大功告成啦~~~~
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打不开网页,详细教您怎么解决能上qq但是打不开网页
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笔记本小键盘怎么关闭,详细教您怎么关闭笔记本小键盘
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