曾经在Instagram或Facebook上找到一张图片，并想看看这张图片是否出现在Internet上的其他任何地方？或者，也许您想查看您的图像是否被未经授权发布的其他人窃取？
在任何这些情况下，您都需要执行反向图像搜索。您可以使用几种不同的工具来进行反向图像搜索。在本文中，我将讨论如何找到不同尺寸的图像以及如何找到具有相同图像的其他网站。
谷歌图片搜索
谷歌(Google)很可能拥有比其他任何人都最大的在线图片索引。如果您正在寻找图片，最好从images.google.com开始。
单击(Click)小相机图标，然后屏幕将更改，以便您可以粘贴图像URL或上传要搜索的图像。
如果您要搜索的图像在线，只需右键单击它并选择Copy Image Address/Copy Image URL if using Google Chrome。在Edge中，唯一的选择是将图片保存到您的计算机。其他浏览器也有类似的选项。您可以复制图像URL或下载它。
单击按图像搜索(Search by Imag)，您将获得如下所示的结果页面：
在我的测试中，我只是在我之前写的一篇文章中抓取了其中一张图片的URL 。该图像是免费的库存照片，所以我知道它会出现在网络上的其他地方。默认情况下，谷歌(Google)试图对图像的含义做出最好的“猜测”，但从上面可以看出，二维码与假期无关。
但是，这不是我对搜索感兴趣的地方。如果您正在寻找您正在搜索的图像的更高质量版本，只需单击“查找此图像的其他尺寸”(Find other sizes for this image)标题下的“所有尺寸”。(All sizes)
您将获得Google(Google)可以找到的所有不同尺寸的完全相同图像的列表。如果您返回主搜索页面，您将在底部看到名为“包含匹配图像的页面(Pages that include matching images)”的部分。这将向您显示在其网站某处具有相同图像的所有已编入索引的网页。您可以单击链接以查看带有图像的确切网页。这是在网络上搜索受版权保护的图像的好方法。
如果您需要经常执行图像搜索，那么最好在Google Chrome中安装(Google Chrome)Search by Image 扩展程序(Search by Image extension)。它来自Google，完全免费。很好的是，您可以右键单击任何图像并选择Search Google with this image。无需复制图片的URL或下载后重新上传。
天眼
反向图像搜索的另一个不错的选择是TinEye。他们已经存在很长时间了，他们有超过 250 亿张图像被索引，并且他们专注于图像搜索。
当您在TinEye(TinEye)中执行搜索时，结果与Google显示结果的方式略有不同。以下是搜索Startbucks徽标的示例：
默认情况下，它将显示按Most Changed排序的结果。这意味着与您正在搜索的图像最不同的图像。如果您想查看相同的图像，请单击下拉菜单并选择Best Match。如果您想要最高质量的图像，请选择最大图像( Biggest Image)。
您还可以单击顶部的两个选项以仅显示集合的结果并仅显示库存图像。
如果您单击结果中的图像，它会弹出一个小框，您可以使用该小框将图像与您的图像进行比较。单击切换(Switch)按钮，它将来回显示您的和匹配的图像。
TinEye 也有一个谷歌 Chrome 扩展(Google Chrome extension)，它的工作方式与谷歌的非常相似，除了它会加载自己的结果，如上所示。
这些几乎是在线执行反向图像搜索的最佳选择。如果您想在智能手机上执行反向图像搜索，请查看PCMag的这篇文章。享受！
2 Tools to Perform Reverse Image Searches Online
Ever found an image on Instagrаm or Fаcebook and wanted to see if that picture shows up anywhere else оn the Internet? Or maybe you want to see if an image of yours was stolen by someone else who published іt without authorizаtion?
In any of these cases, you need to perform a reverse image search. There are a couple of different tools you can use to do a reverse image search. In this article, I’m going to talk about how you can find different sizes for an image and how you can find other websites that have an identical image.
Google Image Search
Google most likely has the biggest index of online images than anyone else. If you’re looking for an image, the best place to start is at images.google.com.
Click on the small camera icon and then screen will change so that you can either paste an image URL or upload an image that you want to search for.
If the image you are wanting to search for is online, just right-click on it and choose Copy Image Address/Copy Image URL if using Google Chrome. In Edge, the only option is to save the picture to your computer. Other browsers have similar options. You can either copy the image URL or download it.
Click Search by Image and you’ll get a results page that looks like this:
In my test, I just grabbed the URL for one of the images in a post I had written earlier. The image was a free stock photo, so I knew it was going to show up somewhere else on the web. By default, Google tries to make a best “guess” on what the image means, but as you can see from above, QR codes have nothing to do with the holidays.
However, that’s not what interests me about the search. If you are looking for a higher quality version of the image you are searching for, just click on All sizes under the Find other sizes for this image heading.
You’ll get a listing of the exact same image in all the different sizes that Google could find. If you go back to the main search page, you’ll see the section at the bottom called Pages that include matching images. This will show you all the indexed web pages that have the same image somewhere on their site. You can click on the link to see the exact webpage with the image. This is a great way to search for copyrighted images on the web.
If you need to perform image search often, then it might be a good idea to install the Search by Image extension in Google Chrome. It’s from Google and completely free. What’s nice is that you can right-click on any image and choose Search Google with this image. No need to copy the URL of the image or download it and then re-upload it.
TinEye
Another good option for reverse image searches is TinEye. They’ve been around for a long time, they have over 25 billion images indexed and they focus exclusively on image search.
When you perform a search in TinEye, the results are a bit different than the way Google shows results. Here is an example of a search for the Startbucks logo:
By default, it will show you results ordered by Most Changed. This means the image that is most different from the image you are searching for. If you want to see identical images, click on the dropdown and choose Best Match. If you want the highest quality images, choose Biggest Image.
You can also click on the two options at the top to show only results from collections and show only stock images.
If you click on the image in the results, it’ll bring up a little box which you can use to compare the image to your image. Click the Switch button and it’ll go back and forth, showing yours and the matching image.
TinEye also has a Google Chrome extension that works pretty much exactly like Google’s except for the fact that it loads its own results as shown above.
These are pretty much the best options for performing reverse image searches online. If you want to perform a reverse image search on your smartphone, check out this post from PCMag. Enjoy!
