Merge PDF Files
Combine multiple PDFs into a single document. Drag to reorder, then download.
Runs on your device. Nothing is uploaded.
Drop PDFs or images here
PDF, images, ZIP · up to 200 MB · processed on this device
How to merge PDFs
Add your files
Add PDFs, images, TXT, Markdown or CSV/TSV. ZIP folders work too. Files stay on your device.
Arrange the order
Drag files into order, or use Earlier and Later. The merged PDF follows that sequence.
Download
Click Download merged PDF. Open Download settings first if you also want to compress the result.
When you need to merge PDFs
Scattered documents are harder to share, harder to archive, and easier to lose. Here's when combining them makes sense:
Client deliverables
Combine a proposal, contract, and appendices into one professional package instead of sending three attachments.
Expense reports
Merge receipts, invoices, and the expense form into a single PDF for accounting.
Research & reference
Combine journal articles, notes, and citations into one searchable document.
Application packets
Merge your resume, cover letter, portfolio, and references for job or school applications.
What you can do
Drag to reorder
Grab any file and move it to change the page order in your final document.
Remove files
Changed your mind? Remove any file from the list before merging.
Preview pages
See thumbnail previews of each PDF so you know exactly what you're combining.
Frequently Asked Questions
Is there a limit to how many PDFs I can merge?
Up to 50 files, subject to the displayed device-safety limits. The practical constraint is browser memory — for best performance, keep the combined size under 50MB. Very large merges might slow down on older devices.
Do bookmarks and page numbering survive a merge?
Yes. Every document keeps its own bookmarks, each re-pointed at wherever its pages ended up, and its own page numbering — merge roman front matter with a lettered appendix and you get both, not a renumbering of either. Where two documents disagree on something a file can only do one way — viewer preferences, the opening page mode, the page layout — the first document in your order wins, so dragging a different file to the top changes which one leads. Fillable form fields and accessibility tags cannot survive any rebuild, because each keeps half of itself outside the page; rather than hand back controls that no longer work, this copy removes them.
Can I merge password-protected PDFs?
Not directly. If a PDF is encrypted, you'll need to remove the password first (using Adobe Acrobat or a similar tool). Once the file is unprotected, it merges normally.
Will bookmarks and links be preserved?
Basic document structure is preserved. However, complex features like bookmarks, internal hyperlinks, and form fields may not transfer perfectly. This is a limitation of browser-based PDF processing.
Does merging affect quality?
No. Merging is lossless — we copy page objects directly without re-encoding. Image resolution, text sharpness, and vector graphics remain identical to the source files.