Merge PDF
Merge multiple PDF files online for free. Reorder, combine and download your PDF instantly with UsePDF.io.
Drop PDF, images or Office files to merge
Upload PDF, images, or Office files and we'll prepare them for a visual merge workspace.
or drag files here
PDF files open directly. Images and Office documents are converted to PDF.
Supported formats
Merge queue
Drag file cards to reorder them before merging.
Your merge queue is empty
Upload two or more PDF or Office files to see file cards, reorder them visually, and prepare the final merged document.
Page preview
Review how pages will flow in the final merged document.
No pages to preview yet
Upload PDF or Office files and their pages will appear here as visual cards.
Start with your files
Upload PDF, images, or Office files and we'll prepare them for a visual merge workspace.
Queue summary
Frequently Asked Questions
How do I merge PDF files online for free?
Upload two or more PDF files to UsePDF.io, arrange their order if needed, and click Merge. Download the combined PDF instantly — no sign-up required.
How many PDF files can I merge at once?
You can merge as many files as needed in one session. Each file can be up to 50 MB.
Can I merge Word or Excel files into a PDF?
Yes. UsePDF.io automatically converts DOC, DOCX, XLS, XLSX, PPT, and PPTX files to PDF before merging them.
Can I change the order of pages before merging?
Yes. After uploading, you can drag and drop files to reorder them before merging.
Is the merged PDF kept private?
Yes. All uploaded files are deleted from our servers immediately after the merged PDF is ready for download.
What this tool does
Merge PDF combines separate documents into one clean file for reports, invoices, contracts, study notes, or client packets.
Upload your files, reorder them visually, and download one combined PDF. The workflow is designed for quick review before export, so you can confirm the order before saving the final document.
PDF files are merged directly. Office files are converted to PDF first, then added to the final document. UsePDF.io keeps the workflow simple: upload your file, review the result when preview is available, and download the output when processing is complete.
How to use it
- 1Upload two or more files.
- 2Drag files into the order you want.
- 3Merge and download one PDF.
Supported formats
File privacy: Files are processed only for the action you request. We avoid using document contents for analytics, and you should only upload files you have permission to process.