Merge PDF Files Online
Combine multiple PDFs into a single file with OmnisPDF. Upload, reorder, merge, and download — quick, clean, and browser-based.
Drop your files here
or click to browse files
Supported formats: .pdf
Use OmnisPDF's Merge PDF tool to combine PDFs into one file in seconds. Upload multiple PDF documents, arrange them in the right order, and download a single merged PDF — perfect for submissions, contracts, invoices, and reports.
- ✓ Merge multiple PDF files into one PDF
- ✓ Reorder files before merging for the correct page sequence
- ✓ Great for reports, receipts, invoices, and forms
- ✓ Works on Mac, Windows, iOS, Android, and Linux
- ✓ No installation — merge PDFs directly in your browser
Combine PDFs Into One Document
Merge PDFs into a single, shareable file. Ideal for sending one attachment instead of many, or submitting a complete packet to schools, banks, or employers.
Reorder PDF Files Before Merging
Upload your files and sort them into the exact order you want. OmnisPDF merges them in the sequence you choose.
Merge PDFs for Printing and Sharing
Create one clean PDF for printing, emailing, archiving, or uploading — without juggling multiple files.
How to Merge PDFs
Upload two or more PDF files to OmnisPDF.
Drag to reorder them in the correct sequence.
Click Merge PDFs.
Download the combined PDF.
Frequently Asked Questions
How do I merge multiple PDF files into one?
Upload your PDFs to OmnisPDF, reorder them as needed, then click Merge PDFs to download one combined file.
Can I reorder PDFs before merging?
Yes. Upload your files and sort them into the correct order — OmnisPDF merges them in that sequence.
Can I merge PDFs on my phone?
Yes. OmnisPDF works in mobile browsers — upload, merge, and download on iPhone or Android.
Can I merge password-protected PDFs?
Password-protected PDFs need to be unlocked before merging. Use our Unlock PDF tool first.
Is it safe to upload my PDFs?
Yes. All transfers are SSL encrypted and your files are deleted immediately after your session. We never store or share your documents.
What is the maximum file size for merging?
Free accounts can upload files up to 25MB each. Pro accounts can upload files up to 200MB. Business accounts can upload files up to 1GB each.