执行反向图像搜索在许多方面都是有利的。只需点击几下，您就可以轻松找到图片的来源(find the origin of a picture)、验证其真实性、跟踪重复项或识别照片中的对象。如果这是您第一次听到该术语，我们的反向图像搜索解释(Reverse Image Search explainer)器会提供您需要了解的有关该技术的所有信息。
您将在本教程中学习在 iPhone 或 iPad 上按图像搜索的不同方法。许多人依靠基于网络的工具来执行反向图像搜索(web-based tools to execute reverse image searches)，但专用的搜索应用程序要好得多。它们通常具有复杂的功能和增强的技术。
谷歌应用(Google App)（免费）
适用于 iOS 和 iPadOS(Google app client for iOS and iPadOS)的Google 应用程序客户端功能丰富，但被低估和未充分利用。以下是如何使用该应用程序执行反向图像搜索：
- 从App Store(App Store)下载并在您的 iPhone 或 iPad 上安装 Google 应用(install the Google app)程序。
- 点击搜索栏中的相机图标(camera icon)，然后选择打开相机(Open camera)。
- 如果您是第一次使用该应用程序执行反向图像搜索，您需要授予该应用程序访问您的 iPhone 相机的权限。选择确定(OK)继续。
- 点击搜索图标旁边的图像图标，然后选择(image icon)允许访问所有照片(Allow Access to All Photos)以授予Google应用访问您的媒体库的权限。
- 最后，选择图片，等待谷歌的反向图片搜索引擎处理并显示结果。
请注意，Google应用程序的反向搜索引擎可能只捕获图像的一部分，但我们的实验结果非常准确。据谷歌(Google)称，该应用程序默认捕获图像上的较小区域以提供更具体的结果。但是您始终可以通过调整高光的大小来重新调整图像的捕获部分。
拖动(Drag)四个角中的任何一个以捕获更多屏幕区域并将手指从屏幕上松开。Google应用程序将刷新反向搜索并重新加载搜索结果。
向上滑动视觉匹配(Visual matches)卡片以查看更多结果。
谷歌浏览器(Google Chrome)（免费）
如果Google Chrome是您的默认 iPhone 浏览器，您可能不需要专门的反向图像搜索应用程序即可在 iPhone 上按图像进行搜索。您可以快速确定网站上图像的来源，而无需将图像下载到 iPhone 或 iPad 媒体库。
只需(Simply)点击并按住任何网页上的图像，然后在上下文菜单中 选择在Google 上搜索此图像即可。(Search Google for This Image)
Chrome将打开一个新的Google 搜索(Google Search)选项卡，其中显示具有精确图像或类似变体的网站。滚动(Scroll)到“视觉上相似的图像”部分并选择显示所有图像(Show all images)以查看相似的版本或相似的图像。您可以使用此Chrome(Chrome)功能在任何网站上反向搜索图像。
反向图像搜索应用程序(Reverse Image Search App)（应用内购买免费）
该应用程序的一个独特功能是其多样化的反向图像搜索选项。您可以对复制到 iPhone 或 iPad 剪贴板的本地存储的图像文件和图片执行反向搜索。
在应用程序的仪表板上，选择照片(Photos)以从媒体库中选择预先存在的图像，或点击相机(Camera)以拍摄新照片。选择文件以在(Files)文件(Files)应用程序中选择图像文件。然后(Afterward)，裁剪或调整图像大小以突出显示您要搜索的部分，然后点击搜索(Search)。
结果页面上有一个搜索引擎选项卡，您可以在其中轻松地在其他三个搜索引擎（Bing、Yandex和TinEye ）中搜索相同的图像。
要从网页反向搜索，点击并按住图像，选择复制图像(Copy Image)（或复制图片(Copy picture)- 取决于您的浏览器），然后打开反向图像搜索(Reverse Image Search)应用程序。检查“粘贴”部分，您应该会在剪贴板图像(Clipboard Image)选项旁边看到刚刚复制的图像的预览。点击剪贴板图像(Clipboard Image)以反向搜索图像。
反向图像搜索应用程序(Reverse Image Search App)默认使用谷歌的搜索引擎，但您可以切换到另一个搜索引擎。
打开应用程序的设置(Settings)菜单，选择默认搜索引擎(Default Search Engine)，然后选择其他搜索引擎选项。
请注意，“图像 URL”和“剪贴板图像”搜索等高级功能是付费功能。您可以免费执行基本的反向图像搜索，但这是有代价的：不断的广告。
Reversee是另一个值得一提的反向图像搜索应用程序。这是一个免费的应用程序，但您需要付费才能删除广告、使用多个搜索引擎、自动裁剪图像以及从剪贴板中搜索图像。
应用程序界面整洁，超级好用。但是，升级到专业版的不断弹出窗口有点烦人，特别是因为付费功能可以在Google和Google Chrome应用程序中免费使用。尽管如此，这是一个值得一试的选择。
点击选择图片(Choose a Picture)，授予应用访问您的照片库的权限，选择并裁剪您想要反向搜索的照片。然后(Afterward)，选择您喜欢的搜索引擎（Google是唯一可供免费用户使用的搜索引擎），然后点击搜索(Search)。
我们的建议：免费更好
在我们的实验中，谷歌(Google)应用提供了最准确的结果。由Google Lens提供支持，该应用程序会自动裁剪图像并修剪掉可能会扭曲结果的冗余区域。除了极其准确之外，Google应用程序完全免费使用、安全且无广告。结果页面上的图像质量也没有降低。我们完全推荐Google应用程序 — 稳定的 9.8/10！
How to Search by Image (Reverse Image Search) on iPhone/iPad
Pеrforming reverse image searches is advantageous on manу fronts. With a few clicks оr tapѕ, you сan easily find the origin of a picture, verify its authenticity, track duplicates, or identify objects in a photo. If it’s your first time hearing the term, our Reverse Image Search explainer has everything you need to know about the technology.
What you’ll learn in this tutorial are the different ways to search by image on iPhone or iPad. Many people rely on web-based tools to execute reverse image searches, but dedicated search apps are a lot better. They often have sophisticated features and enhanced technologies.
The Google app client for iOS and iPadOS is feature-packed but quite underrated and underused. Here’s how to use the app to perform a reverse image search:
- Download and install the Google app on your iPhone or iPad from the App Store.
- Tap the camera icon in the search bar and select Open camera.
- You’ll need to grant the app access to your iPhone camera if it’s your first time using the app to perform a reverse image search. Select OK to continue.
- Tap the image icon next to the search icon and select Allow Access to All Photos to grant the Google app permission to your media library.
- Finally, select the image and wait for Google’s reverse image search engine to process and display results.
Note that the Google app’s reverse search engine may only capture a section of the image, but the results of our experiments are pretty accurate. According to Google, the app captures a smaller area on the image by default to provide more specific results. But you can always readjust the captured section of the image by resizing the highlight.
Drag any of the four corners to capture more area of the screen and release your finger from the screen. The Google app will refresh the reverse search and reload the search results.
Swipe up the Visual matches card to view more results.
If Google Chrome is your default iPhone browser, you might not need a dedicated reverse image search app to search by image on your iPhone. You can quickly determine the origin of an image on a website without having to download the image to your iPhone or iPad media library.
Simply tap and hold an image on any webpage and select Search Google for This Image on the context menu.
Chrome will open a new Google Search tab showing websites with the exact image or similar variations. Scroll to the “Visually similar images” section and select Show all images to view similar versions or lookalikes. You can reverse search an image on any website using this Chrome feature.
One unique feature of this app is its diverse reverse image search options. You can perform a reverse search on locally stored images files and pictures copied to your iPhone or iPad’s clipboard.
On the app’s dashboard, select Photos to choose a pre-existing image from your media library or tap Camera to take a new photo. Select Files to choose an image file in the Files app. Afterward, crop or resize the image to highlight the section you want to search for and tap Search.
There’s a search engine tab on the results page where you can easily search the same image in three other search engines—Bing, Yandex, and TinEye.
To reverse search from a webpage, tap and hold the image, select Copy Image (or Copy picture—depending on your browser), and open the Reverse Image Search app. Check the “Paste” section and you should see a preview of the image you just copied next to the Clipboard Image option. Tap Clipboard Image to reverse search the image.
The Reverse Image Search App uses Google’s search engine by default but you can switch to another search engine.
Open the app’s Settings menu, select Default Search Engine, and choose other search engine options.
Note that advanced features like “Image URL” and “Clipboard Image” search are paid features. You can perform basic reverse image searches for free, but it comes at a price: incessant ads.
Reversee (Free with In-App Purchases)
Reversee is another reverse image search app that’s worth mentioning. It’s a free app but you’ll need to pay a fee to remove ads, use multiple search engines, auto-crop images, and search images from your clipboard.
The app interface is tidy and it is super easy to use. However, the incessant pop-ups to upgrade to the pro version were a little annoying, particularly because the paid features are available for free in the Google and Google Chrome apps. Nonetheless, it’s an option worth going over.
Tap Choose a Picture, grant the app access to your photo library, select and crop the photo you want to reverse search. Afterward, select your preferred search engine (Google is the only search engine available for free users), and tap Search.
Our Recommendation: Free Is Better
From our experiment, the Google app provided the most accurate results. Powered by Google Lens, the app automatically cropped the image and trimmed out redundant areas that may skew the results. In addition to being insanely accurate, the Google app is totally free to use, safe, and ad-free. There’s also no reduction in the quality of images on the results page. We totally recommend the Google app—a solid 9.8/10!
