Merge PDF
Combine multiple PDF files into one. Upload PDFs, arrange order, and download the merged file instantly — no upload to server.
📄
Click or drag PDFs here
Files are processed locally — never uploaded to any server
Your files are never uploaded. All processing happens in your browser.
How to Use
- 1
Upload PDF files
Click to upload two or more PDF files you want to merge.
- 2
Arrange order
Drag to reorder the files in the sequence you want.
- 3
Merge and download
Click Merge PDF to combine all files into one and download.
How It Works
This tool combines multiple PDF files into a single document, preserving every page's original text, images, and formatting — with the entire merge happening in your browser rather than on a remote server.
Why browser-based merging matters
Your PDFs are read and combined using JavaScript running locally in your browser (via the pdf-lib library) — the files are never uploaded anywhere. This matters for sensitive documents like contracts, ID scans, or financial statements, where uploading to an unknown third-party server carries real privacy risk.
How page order works
Files are merged in the order you upload or arrange them — each source PDF's pages are appended sequentially, keeping every page's original content and formatting exactly as it was in the source file.
Examples
Combining scanned documents
Merging a scanned ID, a signed agreement, and a supporting document into one PDF before emailing them as a single attachment instead of three separate files.
Assembling a report
Combining a cover page PDF, a data appendix PDF, and a main report PDF into one final document for submission.
Common Use Cases
- Combining multiple scanned documents into a single file for submission or email
- Assembling a report from separately created cover pages, chapters, or appendices
- Merging multiple invoices or receipts into one PDF for expense reporting
Tips
- Arrange your files in the correct order before merging — the output follows the exact sequence you upload or arrange them in, and reordering afterward means re-running the merge.
- Since everything happens locally, very large PDFs (hundreds of pages or large embedded images) may take longer or use more browser memory than merging a handful of small documents — for huge batches, consider merging in smaller groups.
Frequently Asked Questions
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