PDF Merger
Combine multiple PDF files into a single document — free, browser-based, no upload
Merge Settings
Add Metadata
Include creator/date info
Preserve Metadata
Keep OmniWebKit stamp
Optimize Size
Use object streams
Drag & drop PDF files, or click to select
Pages counted automatically • Real PDF processing
Free Online PDF Merger — Combine Multiple PDFs into One Document
Managing multiple PDF files can be frustrating. Contracts arrive as separate pages. Reports are split across attachments. Scan jobs produce one PDF per page. Submitting an application requires a single combined document. Rather than juggling a dozen separate files, you can merge them into one clean, sequential PDF — and this tool does it for free, right in your browser.
This PDF Merger uses the pdf-lib library to perform real PDF processing — not image conversion, not screenshots, but genuine page-by-page merging that preserves text, fonts, images, links, and formatting from every source file. Upload two or more PDFs, arrange them in the order you want, and click Merge. The result is a single PDF document with accurate page numbering and full fidelity.
All processing happens locally in your browser. Your PDF files are never uploaded to a server, never stored remotely, and never accessed by anyone other than you. There is no file size limit, no page limit, and no account required.
How the PDF Merger Works
Page-by-page copying
Each page from every source PDF is copied individually into the merged document. This preserves all content — text, images, vector graphics, fonts, and links — exactly as they appear in the original.
Automatic page counting
When you upload a PDF, the merger reads the actual page count from the PDF metadata. You see accurate page numbers before merging, so you know exactly what you are combining.
Metadata and optimisation
Toggle "Preserve Metadata" to stamp the merged file with creator, producer, and date information. Toggle "Optimize Size" to use PDF object streams for a smaller file.
Reordering controls
Move files up or down with arrow buttons, or shuffle them randomly. The merge follows the exact order shown in the list — what you see is what you get.
Common Use Cases
Combining scanned documents
Scanners often create one PDF per page. Merge all scanned pages into a single document for easier viewing, sharing, and archiving.
Assembling application packages
Job applications, visa forms, and university submissions often require all documents in a single PDF. Merge your resume, cover letter, transcripts, and certificates into one file.
Merging report sections
Team members produce separate sections of a report. Merge them in the correct order to produce the final combined document.
Combining invoices and receipts
Merge monthly invoices, expense receipts, or purchase orders into a single PDF for accounting and record-keeping.
Creating e-book compilations
Combine individual chapters, articles, or essays into a single PDF e-book or reading packet.
Legal document assembly
Combine contracts, appendices, exhibits, and signature pages into a single legal document package.