How to Merge PDF Files Online for Free (No Software Needed)
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Need to combine a contract, an addendum, and a signature page into a single PDF? Or merge dozens of scanned pages into one document? Our free browser-based PDF merger lets you do it in seconds โ no software to install, no account required, and your files never leave your device.
Why Merge PDFs?
- โข Share one file instead of many: Send a single attachment instead of five โ easier for the recipient and less likely to get something lost.
- โข Combine scanned pages: Scanners often produce one PDF per page. Merge them into a single readable document.
- โข Organize reports: Merge a cover page, body, and appendix into one professional document.
- โข Archive records: Combine related invoices, receipts, or contracts into a single file for record-keeping.
How to Merge PDFs in 3 Steps
Upload your PDF files
Drag & drop multiple PDFs onto the upload area, or click to select them from your device. You can add as many files as you need.
Reorder if needed
Use the โ and โ arrows next to each file to set the order. The files will be merged in the order shown โ top to bottom.
Click Merge & Download
Hit the Merge button and your browser will download a single merged.pdf containing all pages from all files in order.
Your Files Stay Private
Unlike most PDF tools, our merger runs entirely in your browser using the open-source pdf-lib library. Your PDF files are never uploaded to any server. This makes it safe for sensitive documents: legal contracts, financial statements, medical records, or anything you wouldn't want stored on a third-party server.
Supported File Types
Works with standard, unencrypted PDF files. If a file is password-protected, remove the password first before merging. Most PDFs created by Word, Google Docs, Adobe Acrobat, or any printer driver will work fine.
Common Use Cases
Legal documents
Combine contract body + signature pages + exhibits into one PDF
Scanned documents
Merge 20 single-page scans into a complete document
Business reports
Attach appendices, charts, and data sheets to a main report
Invoices & receipts
Bundle monthly receipts into a single file for accounting
Research papers
Combine multiple papers into a study bundle
Presentations
Merge slide decks with handouts or speaker notes
Merge PDFs instantly โ free, private, no sign-up
Runs entirely in your browser. Your files never leave your device.
Open PDF Merger โAdvertisement
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