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Professional, Secure, Efficient
Redefining online PDF processing right in your browser.
Ultimate Security
No server uploads. All PDF merging happens in your browser (device), so confidential documents and personal information remain completely secure.
No Registration Required
No tedious sign-ups, email verification, or software installation. Start merging PDFs and creating stamps immediately upon visiting.
Cross-Platform Support
Works on any modern browser (Chrome, Edge, Safari) across Windows, Mac, iPhone, Android, and more. Completely free.
Why Choose PDF365?
100% Private
Files are processed entirely within your browser. Zero uploads.
Lightning Fast
No upload wait times. Instant client-side processing.
Completely Free
No registrations, ads, or watermarks. Unlimited access.
Secure Add PDF Attachments Right in Your Browser: No Server Uploads Required
1. Upload
Drag and drop your PDF into the secure area.
2. Setup
Tailor settings like angles or compression in the panel.
3. Result
Click process and the file is yours instantly.
Secure Add PDF Attachments Right in Your Browser: No Server Uploads Required
When you embed files in PDF portfolios, the primary concern is the leakage of sensitive data. Unlike traditional cloud-based tools that process files on remote servers, this tool executes all operations directly within your local browser. Documents like contracts and invoices never leave your computer, eliminating any risk of server-side data leaks.
Typical Scenarios & Guidelines
1. Contract Attachment Embedding: Packing Supplement Files
Embed contract supplements, technical specifications, or quotations as attachments into the main contract PDF, keeping all related files in one document for easy management and transfer.
2. Report Data Appendix: Attaching Raw Data Files
Embed raw data tables, survey questionnaires, and other attachments into research reports or analysis documents, enabling readers to directly access supporting materials.
3. Product Manual Resource Pack: Embedding Multimedia References
Embed technical specification sheets, installation guides, and other attachments into product manual PDFs, providing users with complete product information references.
FAQ
Q:What types of attachments can I add?
Any file type can be added as an attachment, including PDFs, images, Word documents, Excel spreadsheets, etc. Attachments are embedded inside the PDF without changing the main document's page content.
Q:Will adding attachments increase the file size?
Yes. Attachment files are fully embedded in the PDF, and the file size increases by the size of the attachments. To control total size, compress attachment files first.
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