PDF Merge
Combine multiple PDF files into one document online instantly in your browser. Free PDF merger with drag-and-drop reordering.
Drop PDF files here or click to browse
Select multiple files at once. All processing happens in your browser.
About PDF Merge
The PDF Merge tool lets you combine multiple PDF documents into a single file directly in your browser. Whether you need to consolidate invoices, merge scanned documents, or assemble a report from separate chapters, this tool handles it instantly with no file size limits and no watermarks.
All processing happens client-side using the pdf-lib library. Your files are never uploaded to any server, ensuring complete privacy and security. The merged PDF preserves all pages, annotations, and formatting from each source document.
Key Features
Unlimited Files
Merge as many PDF files as you need. There are no artificial limits on the number of files or total page count. Combine 2 or 200 documents in one go.
Drag-to-Reorder
Arrange your files in the exact order you want by dragging them in the list or using the arrow buttons. The merged output follows your chosen sequence.
100% Private
Your PDF files never leave your device. All merging is done locally in your browser using JavaScript. No server uploads, no cloud processing, no data retention.
Instant Processing
No waiting for server responses. Merging begins immediately when you click the button. Even large documents are processed in seconds thanks to efficient client-side PDF handling.
How to Merge PDF Files
Upload Your PDFs
Click the upload area or drag and drop your PDF files. You can select multiple files at once from the file picker.
Arrange the Order
Drag files to reorder them or use the up/down arrows. The files will be merged in the order shown in the list, top to bottom.
Merge & Download
Click "Merge & Download PDF" to combine all files into a single document. The merged PDF will download automatically.
Common Use Cases
Business Documents
Combine invoices, contracts, proposals, and reports into a single organized PDF for easy sharing and archival.
Academic Papers
Merge research papers, lecture notes, and reference materials into one file for easier studying and citation management.
Scanned Documents
Consolidate separately scanned pages into a single multi-page PDF document for printing, emailing, or digital filing.
Frequently Asked Questions
Is there a file size limit?
There is no hard limit. Since processing happens in your browser, the practical limit depends on your device's available memory. Most users can comfortably merge documents totaling hundreds of megabytes.
Are my files uploaded to a server?
No. All PDF processing is done entirely in your browser. Your files never leave your device, making this tool safe for confidential and sensitive documents.
Does merging preserve bookmarks and links?
Page content, annotations, and formatting are fully preserved. Internal bookmarks and cross-document links may not carry over between merged files, as they are scoped to their original document.
How to Use PDF Merge
Open PDF Merge
Navigate to PDF Merge in your browser.
Upload your file
Click the upload area or drag and drop your file. It will be processed locally in your browser.
Configure settings
Adjust any available options such as quality, format, or output preferences.
Download the result
Once processing is complete, click Download to save the output file to your device.
Frequently Asked Questions
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