Add Attachments
Embed files in PDF documents. Attach any file type to your PDFs.
1. Select PDF File
Upload PDF File
2. Select Files to Attach
Upload Attachments
About This Tool
Add Attachments embeds extra files inside a PDF — supporting evidence, source spreadsheets, original images — so they travel with the document wherever it goes. The attachments become part of the PDF's file tree, retrievable by any PDF reader that supports embedded files and by document systems that index them.
Submit the survey PDF with the raw dataset attached, and the recipient can run their own analysis without chasing a second download. Send a signed agreement with the scanned schedule behind it. Share a design brief with the font and image sources bundled in, and a colleague keeps everything needed in one place. You can add several files of any format in one pass, which collapses what would otherwise be a multi-file email into a single self-contained package.
The embedding runs locally in your browser, so the source files never leave your device. This also means sensitive originals are only shared when you choose to share the whole package. Free, unlimited, and secure by design.
Practical guidance before you use Add Attachments
Best for real document workflows
Use Add Attachments when you need a quick browser-based result without creating an account or sending routine documents through an unnecessary upload workflow. Project Packages is a common example: Bundle project files with documentation PDFs.
Privacy and file handling
EasyPDFNex prioritizes local processing in your browser. That means supported PDF operations run on your device, not in a public cloud queue. For sensitive files, review the output before sharing it, close the browser tab after downloading, and avoid processing documents you are not authorized to edit.
Quality checks after processing
After you save and download, open the result and check page order, text readability, signatures, links, and form fields. If the source file is scanned, encrypted, very large, or damaged, try a related workflow such as extract attachments, edit attachments, edit metadata before repeating the task.
Start with a clean source file whenever possible. For Add Attachments, the first step is usually "Upload Your PDF": Drag and drop your PDF file or click to select. This simple preparation step prevents most failed exports, missing pages, and formatting surprises.
Editorial review note
This guidance is maintained by the EasyPDFNex editorial team and reviewed for practical PDF workflow accuracy. Tool pages are written to explain when a feature is useful, what to check before download, and where browser-based processing has limits.
How to Use
Upload Your PDF
Drag and drop your PDF file or click to select.
Add Attachments
Select files to attach to the PDF.
Save and Download
Click Save to embed attachments and download.
Use Cases
Project Packages
Bundle project files with documentation PDFs.
Report Distribution
Attach source data files to report PDFs.
Contract Bundles
Include supporting documents with contracts.
Frequently Asked Questions
What file types can be attached?
Any file type can be attached to a PDF.
Is there a size limit?
Total PDF size including attachments should not exceed 500MB.
Can recipients extract attachments?
Yes, any PDF reader can extract embedded attachments.