Add Attachments to PDF
Free online tool to add attachments quickly and privately in your browser.
How to Add Attachments to PDF Online for Free
The Add Attachments tool lets you attach one or more files to a PDF document. You can embed documents, images, spreadsheets, presentations, ZIP files, and other file types inside your PDF without changing its content. Simply upload your PDF, add the files you want to attach, and download the updated PDF.
It’s perfect for contracts, reports, project files, manuals, invoices, technical documents, and any PDF that needs additional supporting files.
Key Benefits
- Attach files to PDF documents instantly.
- Supports multiple file attachments.
- Embed documents, images, and other file types.
- Keep the original PDF quality.
- Preserve the document layout.
- Easy to share everything in one PDF.
- Fast browser-based processing.
- Works on desktop and mobile.
- No sign-up required.
- Free and easy to use.
Practical Use Cases
- Attach supporting documents.
- Add invoices to reports.
- Embed images in project files.
- Include spreadsheets with reports.
- Attach presentations to proposals.
- Share ZIP files inside PDFs.
- Organize related files together.
- Prepare business documents.
- Archive project files.
- Share complete document packages.
Features
- Add one or multiple attachments to PDFs.
- Supports many file formats.
- Keeps the original PDF unchanged.
- Preserves document quality.
- Supports multi-page PDF files.
- Fast processing.
- One-click download.
- Browser-based processing.
- Secure file embedding.
- No software installation required.
Why Choose This Tool?
- Add attachments to PDF files in seconds.
- Keep related files together in a single PDF.
- Simple for beginners and professionals.
- Works directly in your browser.
- Perfect for business, school, and personal use.
- Fast, free, and reliable.
How to Use This Tool
Drag your file here or click to choose one from your device. It stays local.
Choose your settings or edit your file directly in the workspace container.
Click the process button and save the new file straight to your downloads.
Why Use This Tool?
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100% Private
Your files never leave your device. All processing happens in your browser using WebAssembly technology.
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Instant Processing
Powered by WebAssembly for lightning fast results, with no server wait times or queues.
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Free Forever
No registration, no subscriptions, no hidden costs. Unlimited usage for everyone.
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Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop and mobile devices.
Frequently Asked Questions
Is Add Attachments to PDF free to use?
Yes, absolutely! Every single tool here is completely free. There are no limits, no hidden subscription costs, and you don't even have to sign up or share your email address. Just use it as much as you need.
Is it safe to add attachments to pdf online?
Yes, it is 100% safe. Most online PDF tools copy your files to their servers, but we don't. We use a browser-based technology called WebAssembly to do all the heavy lifting locally on your own computer. Your files never leave your device.
What file size can I process?
Because the tools process your files directly on your computer, we don't impose any file size limits at all. The only limit is what your computer or phone can handle, meaning you can easily edit files that are 100MB or larger.
Do I need to install any software?
No, you don't need to download or install anything. All you need is a standard web browser (like Chrome, Safari, or Firefox). Just load this page, drag in your file, and you're good to go.