Let's Encrypt:
请按照下面的操作步骤提示进行申请即可得到证书，证书有效期90天。Please follow the operation steps prompts below to apply, and you can get the certificate, which is valid for 90 days.
ZeroSSL:
此URL可能需要先根据下面的提示进行操作来消除跨域不能访问的问题。This URL may need to be operated according to the prompts below to eliminate the problem of cross-domain inaccessibility.申请证书前，你需要根据ZeroSSL的官方文档，先注册ZeroSSL账号并生成一个EAB凭据，每次申请证书时使用此EAB凭据，按照下面的操作步骤提示进行申请即可得到证书，证书有效期90天。Before applying for a certificate, you need to follow ZeroSSL's official documents, register a ZeroSSL account and generate an EAB credential, and use this EAB credential every time you apply for a certificate, follow the operation steps prompts below to apply, and you can get the certificate, which is valid for 90 days.
Google Trust Services:
此URL可能需要先根据下面的提示进行操作来消除跨域不能访问的问题。This URL may need to be operated according to the prompts below to eliminate the problem of cross-domain inaccessibility.申请证书前，你需要根据Google的官方文档，在Google Cloud中生成一个EAB凭据，每次申请证书时使用此EAB凭据，按照下面的操作步骤提示进行申请即可得到证书，证书有效期90天。Before applying for a certificate, you need to follow Google's official documents, generate an EAB credential in Google Cloud, and use this EAB credential every time you apply for a certificate, follow the operation steps prompts below to apply, and you can get the certificate, which is valid for 90 days.注意：因为同一个Google EAB凭据只能绑定到一个ACME账户（私钥），因此你在首次申请证书时，必须同时保存好在第二步操作中新创建的或手动填写的ACME账户私钥，下次申请证书时使用此EAB凭据必须和已保存的ACME账户私钥一起使用。Note: Because the same Google EAB credential can only be bound to one ACME account (Private key), when you apply for a certificate for the first time, you must also save the newly generated or manually filled ACME account private key in the second step, this EAB credential must be used together with the saved ACME account private key when applying for a certificate next time.
*证书中要包含的域名：Domain name to be included in the certificate:
一个证书可以包含多个域名（支持通配符），比如填写：a.com, *.a.com, b.com, *.b.com；第一个域名将作为证书的通用名称（Common Name）；带通配符的域名只支持DNS验证，其他域名支持上传文件验证；注意：填了www.a.com时，一般需要额外填上a.com。A certificate can contain multiple domain names (wildcard are supported), for example, fill in: a.com, *.a.com, b.com, *.b.com; the first domain name will be used as the Common Name of the certificate; Domain names with wildcard only support DNS verification, and other domain names support upload file verification ; Note: When www.a.com is filled in, it is generally necessary to fill in a.com additionally.
*证书的私钥：Private key of certificate:
*ACME账户的私钥：Private key of ACME account:
The generated or filled private key is only used for ACME interface signature, and supports RSA (2048-bit+) and ECC ( curve) private keys; the account private key type has no effect on the certificate; this client will not save or send this private key to anyone else; A private key is equivalent to an account and can be used to revoke an issued certificate; it is recommended to use the same private key every time you apply for a certificate (in this way, the parameters used to verify the domain name ownership are likely to remain identical when multiple certificate applications are made in a short period of time); However, generating a new private key every time will not be a problem in most cases.注意：如果你选择的ACME服务（比如Google）要求提供EAB凭据并且限制了同一个EAB凭据只能绑定到一个ACME账户（私钥），那每次使用此EAB凭据时必须使用相同的一个私钥（首次时如果新创建了私钥，此新私钥需立即保存起来下次和此EAB凭据一起使用）。Note: If the ACME service you choose (such as Google) requires EAB credentials and limits the same EAB credentials to only one ACME account (private key), then you must use the same private key every time you use this EAB credential (if you generate a new private key for the first time, this new private key needs to be saved immediately and used with this EAB credential next time).
*ACME账户的联系邮箱：Contact email of ACME account:
此邮箱地址用于证书颁发机构给你发送邮件，比如：证书过期前的续期通知提醒。This email address is used by the certificate authority to send you emails, such as a reminder of renewal notice before the certificate expires.
EAB凭据：EAB Credentials:
当前ACME服务要求提供外部账号绑定凭据（External Account Binding），比如ZeroSSL：你可以在ZeroSSL的管理控制台的 Developer 中获得此凭据，所以你需要先注册一个ZeroSSL的账号。The current ACME service requires external account binding credentials, such as ZeroSSL: You can obtain this credentials in the Developer of the ZeroSSL management console, so you need to register a ZeroSSL account first.
请给每个域名选择一个你合适的验证方式（推荐采用DNS验证，比较简单和通用），然后根据显示的提示完成对应的配置操作。Please select a suitable verification method for each domain name (DNS Verify is recommended, which is relatively simple and common), and then complete the corresponding configuration operations according to the displayed prompts.
可通过CMD命令来手动验证域名解析是否生效: nslookup -q=txt _acme-challenge.+域名 : 请每个域名选择好对应的验证方式，根据显示的提示进行对应的配置操作；必须所有域名配置完成后，再来点击下面的“开始验证”按钮进行验证，如果验证失败，需要返回第二步重新开始操作。Please select the corresponding verify method for each domain name, and perform the corresponding configuration operation according to the displayed prompts; after all domain names are configured, click the "Start Verify" button below to verify, if the verify fails, you need to go back to the step 2 Start the operation.
开始验证Start Verify取消Cancel重试Retry
步骤四：下载保存证书PEM文件Step 4: Download and save the certificate PEM file
必须保存此文件，请点击下载按钮下载，或者将证书文本内容复制保存为文件（PEM纯文本格式）；文件名后缀可改成 .crt 或 .cer，这样在Windows中能直接双击打开查看。本PEM格式文件已包含你的域名证书、和完整证书链，文本中第一个CERTIFICATE为你的域名证书，后面的为证书颁发机构的中间证书和根证书，如过有需要你可以自行拆分成多个.pem文件。This file must be saved, please click the download button to download, or copy the text content of the certificate and save it as file (PEM plain text format); the file name suffix can be changed to .crt or .cer , so that it can be directly double-clicked to open and view in Windows. This PEM format file already contains your domain name certificate and complete certificate chain. The first CERTIFICATE in the text is your domain name certificate, followed by the intermediate certificate and root certificate of the certificate authority, if necessary, you can split it into multiple .pem files.
下载保存Download
*保存证书私钥KEY文件：Save the certificate private key KEY file:
请点击下载按钮下载，或者将私钥文本内容复制保存为文件（PEM纯文本格式，.key后缀可自行修改成.pem）。如果第二步操作中你手动填写了证书私钥，此处的证书私钥和你填写的是完全一样的，可以不需要重复保存；如果你是新创建的证书私钥，则你必须下载保存此证书私钥文件。Please click the download button to download, or copy and save the text content of the private key as file (PEM plain text format, the .key suffix can be modified to .pem by yourself). If you manually filled in the certificate private key in the step 2, the certificate private key here is exactly the same as what you filled in, and you don’t need to save it repeatedly; if you are a newly created certificate private key, you must download and save it This certificate private key file.
下载保存Download
*保存记录LOG文件：Save the record LOG file:
下载保存Download
The Chinese-English translation is mainly from: Chrome comes with translation + Baidu translation, which is translated from Chinese to English.