pdf tools• Popular
Merge PDF Files Online
Combine separate PDF reports, receipts, and pages into a single, cohesive PDF document with customizable page order.
Processed 100% locally in your browser using pdf-lib. Confidential documents never leave your device.
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How to Use PDF Merger
1
Select PDFs
Upload two or more PDF files you wish to merge.
2
Arrange Order
Drag and drop or sort the documents in your desired sequence.
3
Merge & Save
Click Merge PDFs to generate and download your combined document.
About PDF Merger
Using WebAssembly and JavaScript binary manipulation with `pdf-lib`, the merger decodes PDF cross-reference tables and streams, appending page dictionaries into a unified target document entirely in client memory.
Supported Formats
PDF
Operational Limits
- •Encrypted or password-locked PDFs must be unlocked before merging
Key Features
- Reorder files before merging
- Client-side processing: completely safe for legal, financial, and medical documents
- Preserves original hyperlinks, bookmarks, and fonts
- No file size or page quantity restrictions
Frequently Asked Questions
Yes, 100%. Because your files are parsed and assembled entirely inside your local browser sandbox, our servers never receive, store, or view your documents.