添加附件 PDF 在 n8n

添加附件 PDF 是一个 PDF4me 节点操作 n8n 将一个或多个文件嵌入到 PDF所以可以是电子表格、图像、存档或第二个文件。 PDF 它随文件一起寄送，而不是放在文件旁边。可用于将佐证材料与合同捆绑在一起，将原始数据与报告一起寄送，或将证书与合规性文件一起打包。

此节点的功能

PDF4me添加附件 PDF 需要主机 PDF 来自二进制数据， Base64 String或者 URL然后将您列出的每个文件嵌入到以下位置 附件 附件作为单独的对象包含在其中。与合并不同，附加文件保留其自身的格式和文件名，接收者可以单独打开或保存每个文件。每个附件可以来自不同的来源，例如来自早期节点的二进制文件和从……获取的文件。 URL 可以嵌入到同一次运行中。

相关博客文章

目前尚无关于此功能的博客文章——敬请期待。

在此期间，您可以浏览 PDF4me 博客，查看适用于各平台的教程和工作流程。

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验证您的身份 API 要求

每一个 PDF4me 节点 n8n 需要有效 用于连接的凭证创建或选择一个可以容纳您的 PDF4me API 关键在于确保工作流程能够安全地验证附件请求。

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您不容错过的重要事实

附加操作并不等同于合并操作

附件仍然是一个单独的对象，读者可以将其保存回去。而合并操作则会将页面内容合并成一个连续的文档。

附件是一个可重复的集合

点击 添加附件 每个文件一次。每个条目都有自己的内容类型、名称和来源，因此您可以混合使用二进制、base64 和 URL 一次运行即可获取所有来源。

文件扩展名很重要

附件名称告诉阅读器应用程序如何打开提取的文件，因此务必包含正确的扩展名，例如 .xlsx 或 .zip。

PDF4me 添加附件 PDF 参数面板 n8n在添加第一个条目之前，“附件”集合为空。

附加、合并与压缩

将多个文件合并为一个文件发送的三种方法，对收件人会产生不同的影响。

方法	收件人将获得	最佳匹配
Add Attachment to PDF	One PDF that opens normally, with the extra files available in the attachments panel	Supporting material that must stay in its original format, such as a spreadsheet or an archive
Merge PDFs	One continuous document where all pages read in sequence	Content that genuinely belongs together as a single readable document
Zip the files together	An archive that must be unpacked before anything can be read	Bulk transfer where nothing needs to be readable without extracting first

添加附件会考虑哪些参数？ PDF 需要？

必需的： 操作、输入数据类型、与该输入类型匹配的字段、输出文件名、文档名称，以及附件下的至少一个条目。二进制数据输出名称和自定义配置文件具有可用的默认值。

范围	必需的	它的作用	例子
Action	Required	Selects the PDF4me node action to run. Choose Add Attachment To PDF.	Add Attachment To PDF
Input Data Type	Required	Format of the host PDF input. Choose Binary Data (from a previous node), Base64 String, or URL.	Binary Data
Input Binary Field	Conditional	Name of the binary property on the incoming n8n item that holds the host PDF. Required when Input Data Type is Binary Data. Defaults to data.	data
Base64 Document Content	Conditional	Base64-encoded content of the host PDF. Required when Input Data Type is Base64 String.	JVBERi0xLjQK...
File URL	Conditional	Publicly reachable HTTPS URL to the host PDF. Required when Input Data Type is URL.	https://example.com/contract.pdf
Output File Name	Required	Filename for the PDF returned with the files embedded. Include the .pdf extension.	document_with_attachments.pdf
Document Name	Required	Filename of the source PDF, used for reference and tracking on the request.	document.pdf
Attachments	Required	Collection of files to embed. Click Add Attachment once per file, then fill in the per-attachment fields listed below.	One entry per embedded file
Binary Data Output Name	Optional	Name of the binary property the output item exposes. Defaults to data.	data
Custom Profiles	Optional	Advanced Options field for extra processing settings, supplied in a JSON-like format. Leave blank unless you have a specific profile to apply.	{ "preserveMetadata": true }

每个附件条目内的字段

您创建的每个条目 添加附件 它公开了自己的一组字段。

范围	必需的	它的作用	例子
Attachment Content Type	Required	How this particular attachment is supplied. Choose Binary Data, Base64 Content, or File URL. Each entry can differ.	Binary Data
Attachment Name	Required	Filename the embedded file will carry inside the PDF. Include the correct extension so readers can open it after extraction.	supporting_data.xlsx
Binary Field Name	Conditional	Name of the binary property holding this attachment. Required when Attachment Content Type is Binary Data.	data
Base64 Content	Conditional	Base64-encoded content of this attachment. Required when Attachment Content Type is Base64 Content.	SGVsbG8gV29ybGQ=
File URL	Conditional	Publicly reachable HTTPS URL to this attachment. Required when Attachment Content Type is File URL.	https://example.com/certificate.pdf

输出字段

一次成功的运行返回一个 n8n 携带物品 PDF 及其嵌入文件。

场地	类型	它包含什么
Binary (data)	Binary	The PDF with all listed files embedded, under Binary Data Output Name (default data).
fileName	String	Generated filename, matching Output File Name.
mimeType	String	MIME type of the output, always application/pdf.
fileSize	Number	Size of the returned PDF in bytes, including the embedded files.
attachmentCount	Number	Number of attachments successfully embedded. Compare it against your expected count to catch a silently skipped file.
success	Boolean	True when the attachment operation completed, false on failure. Use it to branch error handling.
message	String	Human-readable status message, carrying success confirmation or error detail.

如何设置“添加附件” PDF 在 n8n？

1. 添加 PDF4me 致你 n8n 工作流程并选择 添加附件 PDF 行动。
2. 在 用于连接的凭证请选择您的 PDF4me 凭证或点击 创建新凭证 并粘贴你的 API 钥匙。
3. 放 输入数据类型 到 二进制数据 （默认）， Base64 String， 或者 URL 并提供匹配的主机 PDF 场地。
4. 在下面 附件， 点击 添加附件 对每个文件执行一次，然后设置其 附件内容类型， 附件名称以及匹配的源字段。
5. 放 输出文件名 （必须以……结尾） .pdf） 和 文档名称 针对源文件。
6. 执行节点并路由返回结果 PDF 继续，检查 attachmentCount 文件数量与预期不符。

典型配置

工作流程示例Common n8n workflow patterns using Add Attachment to PDF.

附带收据的发票

1. 发票 PDF 由账单数据生成。
2. 添加附件 PDF 嵌入匹配的收据和审批记录。
3. 一份文件连同所有证据记录一起提交给应付账款部门。

报告及其来源数据

1. 已生成预定的分析报告 PDF。
2. 添加附件 PDF 嵌入底层 CSV 导出为命名附件。
3. 读者可以阅读叙述内容，并在需要验证时调出原始数据。

附附件的合同

1. 合同是根据模板，在收到签字请求后生成的。
2. 添加附件 PDF 嵌入从中提取的证书和时间表 URLs。
3. 交易对方会收到一份单独的文件进行签署。

审计合规包

1. “循环遍历项目”节点收集归档期间的证据文件。
2. 添加附件 PDF 将每一项嵌入到封面归档文件中。
3. 该软件包已归档，请从中提取附件 PDF 稍后可根据要求拆封。

实用技巧

Always include the file extension in Attachment Name

The extension is what tells a reader application how to open the extracted file. A name without one leaves the recipient guessing.

Check attachmentCount against what you sent

Comparing the returned count to the number of entries you configured is the quickest way to catch a file that failed to embed.

Mention the attachments in the document body

Not every viewer surfaces the attachments panel, so a line of visible text telling the reader that supporting files are embedded prevents them being missed.

Mix sources freely within one run

Each entry has its own content type, so a binary file from an earlier node and a URL-hosted certificate can be embedded together.

Attach when format must survive, merge when it should not

A spreadsheet stays usable as a spreadsheet only if it is attached. Merging would flatten it into page content.

Watch the total size on outbound email

Embedded files count toward the PDF size, so a bundle of large attachments can push the document past a mail gateway limit.

速查表

场地	价值
Action	Add Attachment To PDF
Input Data Type	Binary Data
Input Binary Field	data
Output File Name	document_with_attachments.pdf
Document Name	document.pdf
Attachments	One entry per file, added with Add Attachment
Attachment Content Type	Binary Data
Attachment Name	supporting_data.xlsx
Binary Data Output Name	data
Credentials	PDF4me API credential

常见问题

What is the difference between attaching a file to a PDF and merging PDFs?+

Merging combines page content into one continuous document, so the source files stop existing as separate items. Attaching embeds a file inside the PDF as a discrete object that a reader can open or save back out on its own, keeping the original format intact. Use merge when everything should read as one document, and attach when a spreadsheet, archive, or certificate needs to stay a separate file.

Can I attach more than one file in a single run?+

Yes. Attachments is a collection, so click Add Attachment once per file you want to embed. Each entry gets its own Attachment Content Type, Attachment Name, and source field, which means you can mix a binary file from a previous node with another pulled from a URL in the same request.

What file types can be attached to a PDF?+

Attachments are stored as embedded file objects rather than being converted, a mechanism defined in the ISO 32000 PDF specification, so common document, image, spreadsheet, presentation, archive, and data formats can all be carried. What matters is that Attachment Name includes the correct extension, because that is what tells a reader application how to open the file once extracted.

Will everyone be able to see the attachments?+

Embedded files are exposed through the attachments or bookmarks panel of a full PDF reader. Lightweight in-browser or mobile viewers sometimes do not surface that panel, so if attachments are essential to the recipient, mention in the document body that supporting files are embedded.

How do I get the attachments back out of a PDF later?+

Use the Extract Attachment From PDF action, which is the inverse operation. A common pattern is one n8n workflow that bundles supporting files into an outgoing PDF, and a second that extracts them again when the document comes back.

相关操作

从附件中提取 PDF

正好相反，就是从……中取出嵌入的文件。 PDF 你收到了。

叠加 PDFs

结合 PDF 将内容作为单独文件嵌入时，页面本身的内容并不是你想要的结果。

添加页面 Number 到 PDF

在将辅助文件打包到宿主文档之前，请先完成宿主文档的编写。

保护文档

将敏感支持文件嵌入到软件包中后，对软件包进行密码保护。

在其他平台上执行相同任务

添加附件 PDF 在 Make

与 a 相同的嵌入引擎 Make 模块，连接到 Make 场景。

添加附件 PDF 在 Zapier

从数千个 SaaS 应用和 Webhook 中触发文档打包。

添加附件 PDF 在 Power Automate

Microsoft 365 与……流动 SharePoint， OutlookTeams 和 Dataverse 集成。

添加附件 PDF REST API

原始 PDF4me 用于自定义后端代码或 Postman 测试的端点。

获取帮助

n8n Integration Guiden8n SampleGetting Started