Free Online PDF Merger
Merge multiple PDF files into one — right in your browser. No upload, no signup, no watermarks. Drag to reorder, click to merge.
Drop PDF files here to merge
Select 2 or more PDF files — up to 50MB each
Files to Merge
Drag files to reorder. Files will be merged top to bottom.
Merging...
How to Merge PDF Files Online — Free & Private
Upload PDFs
Drag and drop or browse to select multiple PDF files you want to combine.
Reorder
Drag files up or down to set the merge order. The top file comes first in the result.
Merge & Download
Click merge — combining happens entirely in your browser. Download instantly.
What is PDF Merging?
PDF merging (also called combining or concatenating) is the process of joining multiple PDF files into a single document. Instead of opening and reading several files one by one, you combine them into one cohesive PDF — perfect for reports, portfolios, contracts, and presentations. Our tool performs this operation entirely in your browser, so your files never leave your device.
Why Use Our Free PDF Merger?
- 100% Private & Secure: Your PDFs are processed locally in your browser. Nothing is uploaded to any server — your confidential documents stay on your computer.
- No Limits: Merge as many PDFs as you want. No daily limits, no page restrictions, no file count caps.
- Drag to Reorder: Easily rearrange the merge order by dragging files up or down in the list. The order you see is the order you get.
- No Watermarks: The merged PDF is clean — no branding, no watermarks, no ads embedded in your document.
- Works Everywhere: Desktop, tablet, or phone — our merger works on any device with a modern browser.
Common Use Cases
- Combine contracts: Merge a main contract with appendices, terms, and signature pages into one file.
- Assemble reports: Combine cover pages, executive summaries, and individual sections into a single report.
- Portfolio creation: Merge certificates, work samples, and cover letters into one portfolio PDF.
- Invoice bundling: Combine monthly invoices into one file for accounting or client submissions.
- Course materials: Merge lecture notes, slides, and readings into one study packet.
Frequently Asked Questions
Is this PDF merger really free?
Yes, completely free with no limits. We sustain the tool through non-intrusive advertising on the page.
How many PDFs can I merge at once?
There's no hard limit. However, since processing happens in your browser, very large numbers of files or very large files may be slow depending on your device's memory.
Are my files uploaded to a server?
No. All merging happens locally in your browser using JavaScript. Your files never leave your device, making this safe for confidential documents.
Can I reorder pages within a single PDF?
This tool merges entire files. For reordering individual pages within a PDF, try our PDF Page Reorder tool (coming soon).
What's the maximum file size?
We recommend files up to 50MB each. Since merging happens in your browser, available memory is the limiting factor.
Does it work on mobile?
Yes! Our merger works on iOS, Android, and any modern mobile browser.
Will the quality be affected?
No. Merging simply concatenates the PDF data — no re-encoding or compression is applied. Your pages look exactly as they did in the original files.