Merge PDF Files Online – Combine Multiple PDFs Free
Combine multiple PDF files into one document. Upload, reorder pages, and download your merged PDF instantly — no file size limits.
Upload PDF Files to Merge
Drag & drop or browse files
Select 2 or more PDFs — up to 100MB each
Max file size: 100 MB
Guide
How to Use
Upload PDFs
Click or drag to add 2 or more PDF files.
Reorder Files
Drag or use arrows to arrange files in the desired order.
Download Merged PDF
Click 'Merge PDFs' and download the combined file.
Benefits
Why Use Our Tool?
Unlimited Files
Merge as many PDFs as you need in a single operation.
Reorder Pages
Easily change the order of files before merging.
No Watermarks
Download clean, watermark-free merged PDFs.
100% Browser-Based
No uploads — everything runs locally in your browser.
FAQ
Frequently Asked Questions
How many PDF files can I merge at once?
No limit — add as many PDF files as you need and merge them all in one operation.
Can I reorder files before merging?
Yes. After uploading, use the up/down arrows or drag-and-drop to arrange files in the desired order.
Will merging reduce the PDF quality?
No. pdf-lib merges files losslessly — pages are identical to the originals with no quality change.
Is there a file size limit per PDF?
Each PDF can be up to 100MB. Total merged document size depends on available browser memory.
Can I merge PDFs from different sources?
Yes — any standard PDF file works regardless of origin or the app used to create it.
Is my data safe?
Yes. PDF merging uses pdf-lib and runs entirely in your browser. No files are sent to any server.