How many PDFs can I merge at once?

Free users can merge up to 2 PDFs of 10 MB each. Pro users ($5/month) can merge as many PDFs as their device's memory can handle.

Can I change the order of the files?

Yes. Use the up and down arrows next to each file to arrange them exactly how you want before merging.

Does it work with password-protected PDFs?

The merger will try to open encrypted PDFs, but files locked with a strong password may fail. Remove the password first with your PDF viewer or a dedicated tool.

Will it preserve bookmarks, form fields, and annotations?

Page content, images, and text are preserved. Bookmarks, form fields, and interactive annotations may not carry over depending on the source PDF — pdf-lib copies pages, not the full document tree.

Is there a file size limit?

Free users are capped at 10 MB per file. Pro users are only limited by their device's memory.

Can I merge PDFs with different page sizes?

Yes. Each page keeps its original size and orientation in the merged document, so mixing A4, Letter, and landscape pages works fine.

Merge PDF files

Merge PDF files in any order, locally in your browser — no uploads, no watermarks, no signup. Free, private, and 100% client-side.

Drop two or more PDFs, or click to browse

PDF only · up to 10.00 MB per file on free · Pro unlocks unlimited files & size

What people use it for

Combine a signed contract with its addendums into a single PDF.
Merge scanned pages into one document before emailing.
Bundle invoices for a client into a single monthly PDF.
Join a cover letter, resume, and portfolio for a job application.
Combine boarding passes, hotel confirmations, and itineraries for a trip.
Assemble multi-part research papers or reports into one file.

This free PDF merger lets you combine PDFs online in seconds without uploading a single file. Drop two or more PDFs, drag them into the right order, and download a single merged PDF — no watermark, no signup, and no email required.

It works as an online PDF combiner free of ads and hidden limits, a quick way to merge PDF files for school, work, or freelance projects, and a private alternative to Adobe Acrobat, iLovePDF, or Smallpdf when you don't want to upload confidential contracts, invoices, medical records, or tax documents to a third-party server. Everything happens locally in your browser with pdf-lib, so the files never leave your device.

Each page keeps its original size and orientation, so mixing A4, US Letter, portrait, and landscape pages in the same output works fine. Reorder files with a click, remove any you added by mistake, and merge the final list into one clean PDF you can email, print, or archive. Pro members can merge unlimited files of any size; free users can combine up to 2 PDFs per merge, 3 times a day.

How it works

1
Drop your PDFs
Drag two or more PDF files into the box, or click to browse. They stay on your device.
2
Arrange the order
Use the up and down arrows to reorder pages exactly how you want them in the final document.
3
Merge and download
Click Merge — pdf-lib stitches the files together locally and hands you a single downloadable PDF.

Frequently asked questions

No. The merge runs entirely in your browser using pdf-lib. Your files never leave your device — safe for contracts, invoices, medical records, and anything else confidential.

Want this converter on your website?

Pro members can embed any Minitooler converter on their own site — styled to match, with no branding beyond a small credit link. One iframe, unlimited use, still 100% in the browser.

Unlock embeds — $5/mo

Accent color

Theme

Background

Text color

Width

Height

Embeds are a Pro feature

Upgrade to unlock a customizable iframe snippet you can paste into any website — colors, theme, and size all tuned to match your brand.

Go Pro — $5/mo