Home/Tools/Merge PDF

Merge PDF

Combine several PDFs into one. Drag to set the order, and take only the pages you want from each file. No upload, no page limit, no watermark.

Your PDFs?Files are read into memory and merged here on your device using pdf-lib. Nothing is uploaded. Encrypted PDFs must be unlocked before they can be merged.

Files are joined top to bottom. Drag a row to move it.

Drop PDF files here or click to browse — any number, any size

Working...

Files — drag to reorder 0

File Pages to take

Output

One PDF, in the order shown.

File name

Total pages

0 from 0 files

Contracts and statements stay on this device. Nothing is uploaded or stored.

How to use it

No account, no page cap, no watermark.

Add your PDFs

Drop in as many as you need. Each row shows its page count once read.

Order and trim

Drag rows into the order you want. Type a page range to take only part of a file.

Merge

Download one combined PDF. The originals on your disk are untouched.

Merging without losing what makes a PDF useful

Combining PDFs is the most common document task there is, and it is where the most damage gets done, because the two obvious workarounds both degrade the file.

Printing several PDFs into one flattens every page into an image. Text stops being text, search stops working, screen readers get nothing, and the file balloons. Exporting through a word processor is worse: layout shifts, fonts substitute, and page breaks move. Copying page objects — which is what happens here — leaves the content exactly as it was.

Order is decided by the rows, top to bottom, and dragging is the fastest way to set it. The range box on each row is the part people miss: leave it empty to take the whole file, or type numbers and ranges separated by commas, such as 1-3, 7, 10-12. Pages come out in the order you write them, so 3,1 really does put page 3 first.

Two limits worth knowing. Encrypted PDFs must be unlocked before they can be read, and a small number of damaged files cannot be parsed at all; the row shows the error rather than failing silently, so you can drop it and merge the rest. And while page content copies faithfully, form fields, bookmarks and some annotations are document-level features that do not always carry across. If a form must keep working after the merge, check it before you send it.

Going the other way afterwards is the same family of jobs: split, extract or rotate pages, all in the browser with nothing uploaded.

Questions

How do I combine PDF files into one for free?

Drop the files above, drag the rows into the order you want, then press Merge. You get one combined PDF back. There is no charge, no account, no watermark and no cap on how many files you join.

How do I combine PDF files without installing software?

This page merges with pdf-lib running inside the browser tab, so nothing is installed and nothing is uploaded. It works the same in Chrome, Edge, Firefox and Safari, including on a phone.

Can I combine only some pages from each PDF?

Yes. Each row has a range box. Type page numbers and ranges separated by commas, for example 1-3, 7, 10-12, and only those pages are pulled from that file.

How do page ranges work?

Leave the box empty to take the whole file. Otherwise type page numbers and ranges separated by commas, for example 1-3, 7, 10-12. Pages are taken in the order you write them, so 3,1 puts page 3 before page 1. The box turns red if a number falls outside the file.

Are my PDFs uploaded?

No. Merging happens in this page with pdf-lib compiled to JavaScript. Your files are read into memory, combined, and handed back as a download. Nothing is transmitted, which is the point for contracts, statements and medical records.

Is there a limit on file size or page count?

There is no artificial cap, unlike most free sites which stop at 20 or 50 pages. The practical limit is your device memory, since the whole job runs locally. Very large merges are slower on a phone than on a laptop.

Why will my file not open?

Password-protected PDFs cannot be read until they are unlocked, and a small number of damaged files cannot be parsed at all. The row will show the error rather than failing silently, and you can remove it and merge the rest.

Are bookmarks, forms and links preserved?

Page content, images and text are copied faithfully. Interactive extras such as form fields, bookmarks and annotations are not always carried across, because they belong to the document rather than to a page. If you need a form to keep working, merge with care and check the result.