Merge PDF
Merge PDF — free, fast and private. Runs entirely in your browser, no upload and no sign-up required.
Drop your files here
Drag & drop files here, or browse files
pdfMaximum file size: 100 MB
Processed in your browser — never uploaded.
Technical Specifications
Input FormatMultiple PDFs (.pdf)
Output FormatCombined PDF (.pdf)
Processing Enginepdf-lib (WebAssembly)
Privacy Protection100% In-Browser · Zero server storage
Combine any number of PDF files into a single document, in the order you choose. Pages are copied losslessly — nothing is re-compressed, so quality is identical to the originals.
- Combine scanned pages into one document
- Assemble invoices or receipts for one submission
- Join chapters exported separately into a single report
How it works
- 1
Choose or drop your file
- 2
Adjust options if needed and start processing
- 3
Download the result — everything stays on your device
Frequently asked questions
- Can I rearrange the order of my PDFs before merging?
- Yes. You can reorder, add, or remove PDF files before clicking merge to ensure the final document follows your desired sequence.
- Does merging reduce the resolution of text or pictures?
- No. Pages and asset streams are merged losslessly without re-compression, so the output quality matches the original files identically.
Processed in your browser — never uploaded.