您可能以前见过二维码。它们是方形的，通常是黑色的，在拐角处有一些较小的正方形，并且包含许多弯曲的线条或圆点，让你想知道你应该用它做什么。
什么是二维码？
QR 码是快速响应(Quick Response)码的缩写。就像在商店扫描条形码以查找价格信息一样，可以扫描二维码以挖掘隐藏在那些难以理解的设计背后的任何东西。
唯一的区别是任何人都(anyone)可以制作二维码，而不仅仅是企业。您可以让二维码做几件事。
任何人都可以制作二维码，任何人也可以扫描二维码。下面，我们将看看为什么有人要使用二维码，如何自己阅读二维码，如何制作自己的二维码来打开图像、URL(URLs)等等。
二维码用途(QR Code Uses)
二维码是获取更多信息的视觉快捷方式。正如您在制作自己的 QR 码时将在下面了解到的那样，它们可以用于多种原因，例如提供对URL的快速访问，以便在扫描时打开特定网页。
二维码还可以显示文本或联系信息，开始新的短信、电子邮件或电话。可以通过二维码(WiFi credentials can be accessed from a QR code)等方式访问位置详细信息甚至WiFi 凭据。
以下是二维码好处显而易见的其他一些地方：
- 名片可以被二维码阅读器扫描，这样你就会被带到这个人的网站，给出他们的投资组合，显示他们的电话号码或社交媒体页面等。
- 服装标签等产品可以指向Facebook页面或商业网站。
- 路由器(Routers)可以使用二维码快速轻松地将设备与移动应用程序配对。
- 收据可以打印出自动生成的二维码，以鼓励客户进行调查或突出现金返还机会。
- (Mobile payment apps)Cash App等移动支付应用程序使用二维码轻松向其他用户付款。
- 促销邮件可能会使用 QR 码将您指向带有特殊优惠券的网页，或指向文本块以获取精美的印刷细节。
- 应用程序(Apps)和网站使用二维码进行无缝登录。WhatsApp Web和Messages for Web只是生成 QR 码的网站的两个示例，这些 QR 码由各自的应用程序读取以将登录详细信息发送到计算机。
任何有权访问代码的人只需扫描它即可查看其背后的内容。
如何扫描二维码(How To Scan a QR Code)
扫描二维码的最简单方法是使用手机。打开相机应用程序并专注于二维码，无论是来自您的计算机或电视的二维码，还是实际存在于您面前的二维码。
您可能必须点按一次 QR 码，以便相机识别您要读取它，然后点按说明代码作用的弹出窗口。
如果您的相机应用程序不支持读取 QR 码，或者您需要专门的应用程序，请考虑适用于 Android 的 QR 码阅读器(QR Code Reader for Android)或适用于 iPhone(QR Reader for iPhone)的 QR 码阅读器。Dynamsoft Barcode Reader(Dynamsoft Barcode Reader)可以从计算机扫描 QR 码。
如何制作二维码(How To Make a QR Code)
那里有很多 QR 码生成器，我们无法全部列出，所以我们将列出前几个。
制作 QR 码最简单的方法是使用QRCode Monkey，因为它提供了很多选项。您可以选择该站点上的这些选项卡中的任何一个，以使用此信息制作 QR 码：
- 网址
- 文本
- 电子邮件
- 电话
- 短信
- 电子名片
- 美卡
- 地点
- FACEBOOK
- 推特
- YOUTUBE
- 无线上网
- 事件
- 比特币。
下面是一个示例，展示了如何构建 QR 码来撰写电子邮件：
- 在 QRCode Monkey 上打开EMAIL 页面。(EMAIL page)
- 在第一行输入您的电子邮件地址，然后是主题，然后是邮件正文。
- 可选择设置颜色、添加图像或自定义 QR 码的设计。
- 选择质量设置：从 200×200 像素的低质量到高达 2000×2000 像素的高质量。
- 选择创建二维码(Create QR Code )进行预览，或下载 PNG(Download PNG)下载二维码。
如果您不喜欢QRCode Monkey，您可以尝试其他一些 QR 码生成器，例如goqr.me、the-qrcode-generator.com或qr-code-generator.com中的那个。其中一些支持独特的功能，例如让 QR 码播放歌曲、显示PDF、允许反馈或显示图像库。
上面提到的Android和iPhone二维码阅读器也可以用来制作二维码。
How to Make a QR Code
You’νe probably seen a QR code before. They’re squаre, usually black, have a few smaller squares on the corners, and contain lots of squiggly lines or dots that leаve you wоndering what in the world you’re supposed to dо with it.
What Is a QR Code?
QR codes are short for Quick Response codes. Much like how a barcode is scanned at a store to look up pricing information, a QR code can be scanned to dig up whatever it is that’s hidden behind those unintelligible designs.
The only difference is that anyone can make a QR code, not just a business. There are several things you can make a QR code do.
Anyone can make a QR code, and anyone can scan one too. Below, we’ll look at why somebody would want to use a QR code, how to read one yourself, how to make your own QR code to open images, URLs, and much more.
QR Code Uses
QR codes are visual shortcuts to more information. As you’ll learn below when you make your own QR code, they can be used for several reasons, such as to provide quick access to a URL, so that when scanned, a specific web page opens.
QR codes can also reveal text or contact information, start a new text message, email, or phone call. Location details and even WiFi credentials can be accessed from a QR code, among other things.
Here are some other places where the benefits of QR codes are clear:
- Business cards can be scanned by a QR code reader so that you’re taken to the person’s website, given their portfolio, shown their phone number or social media pages, etc.
- Products like clothing tags can point to a Facebook page or business website.
- Routers can use QR codes to make pairing the device with the mobile app quick and easy.
- Receipts can print out with an auto-generated QR code to encourage the customer to take a survey or highlight cashback opportunities.
- Mobile payment apps like Cash App use QR codes to easily make payments to other users.
- Promotional mail might use a QR code to point you to a webpage with a special coupon, or to a text block for fine print details.
- Apps and websites use QR codes for seamless logins. WhatsApp Web and Messages for Web are just two examples of websites that generate QR codes that are read by their respective apps to send login details to the computer.
Anyone with access to the code just needs to scan it to see what’s behind it.
How To Scan a QR Code
The easiest way to scan a QR code is with your phone. Open the camera app and focus on the QR code, whether it be one from your computer or TV or a QR code that exists physically in front of you.
You might have to tap the QR code once so that the camera recognizes that you want to read it, and then tap the pop-up that explains what the code does.
If your camera app doesn’t support reading QR codes or you want a dedicated app for it, consider QR Code Reader for Android or QR Reader for iPhone. The Dynamsoft Barcode Reader can scan QR codes from a computer.
How To Make a QR Code
There are so many QR code generators out there that we just can’t list them all, so we’ll call out the top few.
The easiest way to make a QR code is with QRCode Monkey because it provides lots of options. You can select any of these tabs on that site to make a QR code with this information:
- URL
- TEXT
- EMAIL
- PHONE
- SMS
- VCARD
- MECARD
- LOCATION
- FACEBOOK
- TWITTER
- YOUTUBE
- WIFI
- EVENT
- BITCOIN.
Here’s an example showing how to build a QR code to compose an email:
- Open the EMAIL page on QRCode Monkey.
- Type your email address in the first line, followed by a subject and then the body of the message.
- Optionally set colors, add an image, or customize the design of the QR code.
- Pick a quality setting: anywhere from low, 200×200 pixels to high quality, as much as 2000×2000 pixels.
- Select Create QR Code to preview it, or Download PNG to download the QR code.
If you don’t like QRCode Monkey, you might try some other QR code generators like the one at goqr.me, the-qrcode-generator.com, or qr-code-generator.com. Some of those support unique features such as having the QR code play a song, show a PDF, allow feedback, or display a gallery of images.
The Android and iPhone QR code readers mentioned above can also be used to make QR codes.
