PDF Tools

Free PDF Merger Online

Select two or more PDFs and merge them in the order you add them. The merge uses pdf-lib in your browser, then offers a download. Your files are not sent to ToolNest.

Your workspace

Runs in your browser

How to use

1Select two or more PDF files.
2Confirm the order — files merge in the order they appear in the list.
3Click Merge PDFs.
4Download the combined file.

What this tool does

— Merge two or more PDFs
— Keeps existing page content
— Runs locally with pdf-lib

Useful when

— Joining signed pages with a cover sheet
— Combining receipts into one attachment
— Assembling a packet from several exports

Limits

— Encrypted PDFs may fail to load.
— There is no drag-to-reorder yet — remove and re-add files to change order.

Where processing happens

Each PDF is loaded with pdf-lib in the browser. Pages are copied into a new document and saved locally.

Questions

Can I merge multiple PDF files?+

Yes. Add at least two PDFs, then merge. There is no ToolNest-imposed file-count cap other than what your browser can hold in memory.

Are my files uploaded to a server?+

No. Merging happens in this tab. If you leave the page before downloading, the result is gone.

Does merge keep form fields and bookmarks?+

Page content is copied. Interactive forms, some metadata, and bookmarks may not transfer.

Guides for this tool

How to submit homework photos as one PDF
Turn homework photos into one readable PDF, check page order and prepare a school submission in your browser.
How to prepare a freelance invoice and client files
Create a simple invoice PDF, check line-item totals and organize client attachments without an account.
How to prepare PDF attachments for office email
Combine office PDFs, extract requested pages and check attachments before sending them to colleagues.
How to merge PDF files in your browser
Combine several PDFs into one file without an account or a file-upload service. What merge keeps, and what it does not.