PDFDrawerMerge PDF — combine PDFs into one file
To merge PDFs, drop two or more files above, arrange them in order, and click Merge PDF — for example, a 3-page contract, a 2-page appendix and a 1-page signature page become a single 6-page PDF in seconds, with every page's original quality untouched.
🔒 Your files never leave your device. This tool runs entirely in your browser — nothing is uploaded to a server, so the document you open is the only copy that ever exists.
How it works
- Drop two or more PDF files into the box above — they appear in a list, in merge order.
- Remove any file you added by mistake; the rest keep their order.
- Click Merge PDF and download the combined file.
About this tool
Merging is the single most common thing people need to do with PDFs: the signed contract in one file, the terms in another, the invoice in a third — and one email, one upload form or one very patient recipient waiting for a single document. This tool stitches your files together end to end, in exactly the order they appear in the list, and produces one clean PDF with every page preserved at its original size, resolution and quality. Nothing is re-rendered or compressed, so text stays selectable and images stay sharp.
Because the merge happens inside your browser, there is no page-count ceiling imposed by an upload server and no copy of your document sitting on a stranger's disk afterwards. Confidential files — tax returns, medical letters, legal contracts — stay exactly where they started: on your device. Very large merges are limited only by your device's memory, which comfortably handles hundreds of pages on any modern phone or laptop.
A few things merging does not do: it will not shrink the combined file (use Compress PDF afterwards if the result is too big to email), it does not carry the source files' bookmark outlines into the result, and files that need a password just to open cannot be read — though files that merely carry copy or print restrictions merge normally. If the order comes out wrong, just re-run it — merging the originals again costs nothing and changes nothing in them.
Frequently asked questions
Is there a limit to how many PDFs I can merge?
There is no fixed page or file limit — the practical ceiling is your device's memory. Merges of dozens of files and several hundred pages are routine on a modern laptop or phone.
Does merging reduce the quality of my pages?
No. Pages are copied into the new file exactly as they are — same resolution, same selectable text, same fonts. Nothing is re-rendered.
Are my files uploaded to a server?
No. The merge runs entirely in your browser using JavaScript. Your files are never transmitted anywhere, and closing the tab leaves nothing behind.
Can I merge a password-protected PDF?
A PDF that needs a password just to open it cannot be read by the tool. A PDF with only copy/print restrictions (an owner password) merges normally.
Will the merged file keep bookmarks and links?
Internal and external links inside pages keep working. Outlines/bookmarks from the source files are not carried into the merged file.
Does the order matter?
Yes — files are merged in the order they appear in the list, top to bottom. Remove and re-add a file to move it to the end.