PDF Merger
Combine multiple PDF files into one document. Upload your files, reorder them, and merge in seconds.
100% Client-Side Processing
Your PDFs are processed entirely in your browser. No files are uploaded to any server.
Table of Contents
What is a PDF Merger?
A PDF merger combines multiple PDF files into a single document. This is useful when you need one shareable file for forms, reports, contracts, scans, or supporting documents.
Instead of sending multiple attachments, you can control the order and download one clean combined PDF.
How it Works
- Upload PDFs: Add two or more PDF files.
- Arrange order: Move files up or down before merging.
- Merge: Combine all pages into one PDF in your browser.
- Download: Save the merged file instantly.
Features
- Merge unlimited PDFs in one session (device memory permitting)
- Reorder PDFs before combining
- View file size and page count per PDF
- Remove files before merging
- 100% client-side processing for privacy
Best Practices
- Set order first: Arrange files exactly how the final document should read.
- Name files clearly: Use names like
01-cover.pdf,02-contract.pdf,03-appendix.pdf. - Keep originals: Save source PDFs in case you need to re-merge or update pages later.
- Review after merge: Open the final PDF and check page order, signatures, and readability.
- Split very large jobs: For huge batches, merge in smaller groups for better browser performance.
Troubleshooting
Merge failed
One or more files may be corrupted, encrypted, or restricted. Try merging files one by one to find the problematic PDF, then unlock or replace it.
Browser slows down on large files
Very large PDFs use significant memory. Close unused browser tabs and merge in smaller batches.
Wrong page order
Use the up/down buttons to reorder files before clicking merge, then run merge again.
Common Use Cases
- Job applications: Resume, cover letter, and certificates in one PDF
- Client handoffs: Contract, scope, and appendix files merged together
- Education: Combine assignments, references, and notes
- Admin workflows: Join scanned forms and signed pages for archiving
Frequently Asked Questions
Yes. Files are processed locally in your browser and are not uploaded to a server.
Some encrypted or restricted PDFs cannot be processed in-browser. If merge fails, remove those files or unlock them first.
There is no fixed app limit, but very large files may be constrained by your device memory and browser performance.
This version merges full files in order. If you want selected-page merging, I can add that next.
The tool combines existing pages without intentionally compressing or downscaling them. Output quality is generally the same as source files.
Yes, but large PDFs are easier to manage on desktop. Mobile works best for smaller merge tasks.
No. The merged file is generated in your browser and downloaded directly to your device.