Merge PDF Files
Combine multiple PDF files into a single document. Drag to reorder.
or drop files here
Maximum file size: 200MB per file
Drag and drop files to reorder before merging
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Learn more about this tool
About PDF Merge
Our PDF merge tool combines multiple PDF documents into a single file without losing quality. You can reorder files before merging, and all processing happens entirely in your browser — your documents never leave your device. Perfect for combining reports, contracts, or any multi-part documents. Whether you are optimizing assets for a US-hosted site on AWS, Cloudflare, or Vercel, trimming email attachments for Gmail and Outlook, or submitting documents to federal portals, this tool keeps your files lean and your workflow fast — all without uploading anything to a server.
When to Merge PDF Files
Combine Reports
Merge multiple report sections into one complete document
Contracts & Agreements
Combine contract pages, appendices, and signatures into a single PDF
Print Preparation
Combine files for batch printing without opening each one
Document Archiving
Merge related documents into a single organized PDF archive
Frequently Asked Questions
How do I merge PDF files?
Upload your PDF files, drag to reorder them as needed, then click "Merge All PDFs". Your merged document will be ready for download in seconds.
Is there a limit on the number of files?
You can merge as many PDF files as you need. There is no fixed limit on the number of files or pages.
Will merging reduce PDF quality?
No, merging simply combines the pages without recompression. The quality of your original documents is fully preserved.
Is this PDF merger free?
Yes, completely free with no limits. Merge as many PDF files as you need, no registration required.
Can I reorder files before merging them?
Yes. Use drag and drop to arrange your PDFs in any order before clicking merge. The files appear in the combined document exactly in the sequence shown on screen, and you can rearrange them as many times as you like.
Are my documents uploaded to a server?
No. All merging happens locally in your browser using JavaScript, so your PDFs never leave your device. Nothing is stored, logged, or transmitted to any server, which makes the tool safe for confidential contracts, invoices, and medical or legal documents.
Can I merge password-protected PDF files?
Only if you know the password. Unlock each protected file in a PDF unlock tool first, save the unprotected copies, then merge them here. Files with owner restrictions on printing or copying usually merge fine, but open-password documents cannot be processed directly.
Does the PDF merger work on iPhone and Android?
Yes. Because everything runs in the browser, the tool works on iPhones, iPads, Android phones and tablets, plus Windows, Mac, and Linux computers. Use Chrome, Safari, Firefox, or Edge — no app installation or account is required on any device.
References & Resources
Authoritative specifications and references for the file formats this tool works with.