Merge PDF Files
Combine multiple PDF documents into one organized file. Arrange pages in your preferred sequence and merge them instantly in your browser with zero server uploads.
Combine multiple PDF documents into a single consolidated file in your browser. Fast drag-and-drop merging using pdf-lib with zero server uploads.
Key Features
Explore performance capabilities engineered for in-browser execution.
How to Use This Tool
Follow these 3 simple steps to use Merge PDF directly in your browser.
Upload two or more PDF files using the drop zone or the file browser.
Use the up and down arrows to sort your PDFs into the correct sequence.
Click 'Merge PDFs' and download the combined PDF document instantly.
Fast, Secure PDF Document Merging in Local Memory
Combining multiple reports, signed agreements, or scanned receipts into a single cohesive document should not require uploading confidential PDFs to remote cloud servers. Our client-side merger uses pdf-lib to stitch PDF byte streams directly in your browser, preserving vector typography, bookmarks, and form fields.
Combine your cover letter, resume, and reference letters into a single professional PDF for prospective employers.
Collate signed contracts, annexures, and ID proofs into a unified legal bundle without risking confidential client data.
Use the visual file reorder buttons to organize documents in exact chronological sequence before executing the merge.
Frequently Asked Questions
Clear, verified answers to common technical and workflow questions about Merge PDF.
Is there a limit on how many PDFs I can merge?
You can merge up to 20 PDF files at once. Each file can be up to 20MB in size.
Are my PDF files sent to a server?
No. PDF merging is performed entirely inside your browser using the pdf-lib JavaScript library. Your files never leave your device.
Can I merge password-protected PDFs?
No. Password-protected or encrypted PDFs cannot be loaded by the browser. You must remove the password protection first before merging.
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