Merge PDF Online
Combine multiple PDF files into a single document. Drag to reorder. 100% free.
✅ PDFs Merged Successfully!
How to Merge PDF Files Online
Combine multiple PDF documents into one — drag to reorder, then merge in seconds.
Upload Your PDF Files
Drag and drop two or more PDF files onto the upload area, or click Browse to select them. There's no limit on the number of files.
Arrange the Order
Drag the file rows up or down to set the exact order you want. The merged PDF will follow this sequence precisely.
Click Merge PDFs
Hit the Merge button. All PDFs are combined in your browser using the pdf-lib library — no files are uploaded to any server.
Download the Result
The merged PDF is ready instantly. Download it and see the stats: number of files merged, total pages, and final file size.
Why Merge PDFs Online?
Keep your documents organized and professional — one file is always easier to manage than many.
Single Attachment
Sending a report, proposal, or portfolio? Merge all parts into one PDF so recipients get a single, coherent document without confusion.
Organize Scanned Documents
Combine individual scanned pages into a single PDF. Drag to reorder pages before merging for a perfectly arranged document.
Instant, No Install
No Adobe Acrobat or desktop software needed. Works on any device with a modern browser — Windows, Mac, iOS, or Android.
100% Private
Your PDF files never leave your device. Everything is processed in-browser using JavaScript — no cloud storage, no data exposure.
Frequently Asked Questions
No — you can merge as many PDFs as your browser can handle. Performance depends on the total file size; very large collections (several hundred MB total) may be slower due to browser memory constraints.
The tool attempts to open protected PDFs but may not be able to merge them if they are encrypted with a user password. Remove the password first using a PDF editor, then merge here.
After merging, run the result through our PDF Compressor to reduce the file size. You can also use Split PDF if you later need to divide the merged document.