PDF Merge
Merge multiple PDF files directly in your browser. Files are never uploaded to any server.
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How to Use
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- 1
Add PDF Files
Drag & drop or use the file select button to add the PDF files you want to merge.
- 2
Arrange the Order
Use the up/down arrow buttons to reorder files. You can also drag and drop to rearrange them.
- 3
Merge & Download
Click the "Merge PDFs" button, then download the result when it's ready.
Drag & drop PDF files here, or click to select
About PDF Merge Tool
The PDF Merge tool lets you combine multiple PDF files into a single document using pdf-lib. Beyond simple merging, it lets you freely reorder files after adding them — by dragging or using the arrow buttons — so the final document comes out in exactly the sequence you intend. This makes it useful in real-world situations such as bundling a quote and a specification sheet to send to a client, or assembling a monthly report that was authored chapter by chapter. It supports up to 100 files per merge, so even large document sets can be processed in one go. A real-time progress bar keeps you informed during larger merges.
Key Features
- Merge multiple PDF files directly in your browser
- Add files via drag & drop
- Reorder files by dragging or using the arrow buttons
- Real-time merge progress display
- Fully local processing — files are never sent to a server
Common Use Cases
- Combining a cover letter and resume into a single PDF before submitting a job application
- Merging multiple scanned documents into one file to email to HR, a bank, or a government agency
- Assembling a multi-chapter report that was written section by section
- Bundling a contract, exhibit A, and addendum into one file before sending for e-signature
- Consolidating several invoices or receipts into one file for expense reporting or tax records
- Combining a proposal, specs sheet, and pricing breakdown into one PDF for a client
Frequently Asked Questions
Are my files uploaded to a server?
No. Merging uses pdf-lib running as JavaScript in your browser. Files are not uploaded to any server.
Is there a limit on how many files I can merge?
You can merge up to 100 files at once. Each file can be up to 50 MB.
Can I merge password-protected PDFs?
Password-protected PDFs are not supported. Please remove the password protection before using this tool.
Can I change the name of the merged file?
The downloaded file is named "merged.pdf" by default. You can rename it after downloading.
How do I change the order of the files?
Use the up and down arrow buttons next to each file to adjust the order. You can also drag and drop files to any position in the list. The merge output follows the order shown in the list.
Where can I check the page count of the merged PDF?
The page count for each file is shown in the file list. You can also see the total page count before merging. After downloading, you can confirm the final page count in your PDF viewer.