How do I merge PDF files?

Add two or more PDFs, drag them into the order you want, then merge and download one combined file. It takes a few clicks and works in any browser.

Is it free to merge PDFs?

Yes. You can use it for free within daily limits. For unlimited use, buy a $2.99 or $6.99 pass. There's no monthly plan.

Can I merge PDFs without signing up?

Yes. You can start merging straight away without creating an account.

How many PDFs can I merge at once?

You can add several PDFs to one merge. Daily limits apply on the free plan, and a pass removes them.

Can I change the order of the files?

Yes. Drag the files into the order you want before merging. The merged PDF follows that order exactly.

Will merging reduce the quality of my PDF?

No. Pages are combined as they are, so text, images and layout stay the same as in the originals.

Can I merge password-protected PDFs?

Remove the password first with Unlock PDF, using the password you already have, then merge the unlocked files.

Can I merge Word documents or images with PDFs?

Convert them to PDF first with DOCX to PDF, JPG to PDF or PNG to PDF, then merge them with your other PDFs.

How do I make the merged PDF smaller?

Run the merged file through Compress PDF to reduce its size for email or upload portals.

How long does dragdropdo keep my files?

Files are encrypted in transit and automatically deleted after 24 hours.

Does it work on iPhone, Android and Mac?

Yes. It runs in any modern browser on Windows, Mac, Linux, Android, iPhone and iPad, with nothing to install.

Merge PDF Files Online for Free

Combine two or more PDFs into a single document, in the order you choose. Upload files up to 20GB, arrange them and download one PDF in a few clicks.

Drag & drop two or more PDFs

Add two or more PDFs, up to 20GB each. You can arrange the order before merging.

Files stay private.

Automatically deleted after 24 hours.

Link 20GB upload limit.

5.0/5

Trusted for 1,826,856+ conversions

HOW IT WORKS

How to merge PDF files in three steps

Combine documents without installing anything.

Add your PDFs

Drag and drop the PDF files you want to combine, or select them from your device or Google Drive.

Arrange the order

Drag the files into the order they should appear in the final document.

Merge and download

Merge the files and download one PDF, or share it with a link.

MERGING EXPLAINED

Separate PDFs vs one merged PDF

BEFORE

Separate PDFs

Every document is its own attachment, with its own name and download. Recipients open them one by one, and it's easy for one to go missing or be read out of order.

AFTER

One merged PDF

All the pages sit in one document, in the order you set. It's one file to send, upload, print or archive, and it opens in any PDF reader.

	Separate PDFs	One merged PDF
Files to send or upload	One per document	Just one
Page order	Depends on how they're opened	Fixed, in the order you choose
Printing	One print job per file	One print job
Portals with a one-file limit	Won't fit	Fits
Page content	Original	Unchanged. Pages are combined as they are
File size	Spread across files	Roughly the total of the originals
Opens in	Any PDF reader	Any PDF reader

USE CASES

Use cases for merging PDFs

When one document works better than a stack of files.

Send one attachment instead of ten

Combine invoices, receipts or reports into a single PDF for an email or client portal.

Submit a complete application

Put a CV, cover letter, transcripts and certificates into the one file most job and university portals ask for.

Assemble a contract pack

Join the agreement, schedules and signed pages so everyone reviews the same complete document.

Close the month in finance

Merge statements and invoices into one file for bookkeeping, audits or your accountant.

Build a course pack

Combine lecture notes, handouts and papers into one PDF that students read in order.

Rejoin scanned pages

Scanners often save each page as its own file. Merge them back into one document.

Create a project report

Merge the cover page, chapters and appendices exported from different apps.

Print in one go

Send one file to the printer so every page comes out in the right order.

Archive a case or project

Keep every document for a client, claim or property together in one record.

Share a portfolio

Combine design work, case studies and references into one file you can send with a link.

SUPPORTED FILES

Which files can I merge?

Start with the documents you already have. You don't need a separate tool for each one.

Only merge documents you own or have permission to share.

PDF files

Add as many PDFs as you need. Each one can be up to 20GB.

Scanned documents

Scanned PDFs merge like any other. Their pages stay as images, so text is only searchable if it was in the original.

Word, Excel or PowerPoint files

Convert them first with DOCX to PDF, then merge the results.

JPG or PNG images

Turn them into PDFs with JPG to PDF or PNG to PDF, then add them to the merge.

Password-protected PDFs

Remove the password with Unlock PDF first, using the password you already have.

TROUBLESHOOTING

Merged PDF not looking right?

Most issues come from the source files, not the merge.

The pages are in the wrong order

The merged file follows the order on screen. Drag files into place before you merge, or number the file names so they sort correctly.

A file won't upload

It may be password-protected or damaged. Unlock it first, or open it on your device and save a fresh copy as PDF.

The merged file is too big to email

Most email services cap attachments at around 20 to 25MB. Run the file through Compress PDF to shrink it.

Pages are different sizes

Merging keeps every page at its original size, so a Letter page next to an A4 page stays that way.

Form fields or comments are missing

Some interactive elements may not carry over. Flatten forms in the original file before merging if you need to keep what's been filled in.

Text can't be selected

The source was probably a scan. Merging doesn't change whether text can be selected or searched.

COMPARISON

dragdropdo vs. desktop PDF editors

Desktop editors are built for full document editing. dragdropdo is built for merging files quickly, from any device.

What matters	dragdropdo	Desktop PDF editors
Nothing to install	✓Yes. Runs in any modern browser.	~Usually a download, and often an account.
Works on phones and tablets	✓Yes. Desktop, Android, iPhone and iPad.	~Mobile apps are often limited or paid.
Large files	✓Up to 20GB per file.	~Limited by your device and the app.
Share the result	✓Yes. Send a share link or QR code from the result page.	~You upload and share the file yourself.
Pricing	✓Free with daily limits. $2.99 or $6.99 passes for unlimited use, no monthly plan.	~Often a monthly or yearly subscription.
Edit page content	✓Not in this tool. Merging combines pages as they are.	~Full editors let you change text and images.

Other tools use different pricing, limits and workflows. This comparison describes dragdropdo's own features without assuming every other tool works the same way.

1.8M+

Files converted

and counting

5.0

Average rating

from 12+ reviews

~4s

Avg. conversion

per file

Files kept

Auto-delete in 24h

WHY DRAGDROPDO

Built to be quick, safe, and free

Merge PDFs in the browser with a simple workflow designed for privacy and fast handoff.

Private by default

Files are encrypted in transit and automatically removed after 24 hours.

No install required

Works in your browser on any device, with no desktop app and no sign-up wall to get started.

Cloud import

Pull files from Google Drive and keep working without downloading them first.

Share and download

Download the result, or hand it off with a share link or QR code.

MORE PDF TOOLS

Explore our other PDF tools

PDF keeps a document's layout, fonts and images the same on every device, which is why it's the standard for contracts, invoices, forms and reports. Once your files are merged, you can shrink, protect or convert the result with the tools below.

Explore all tools