Cover page in front of a report
- Input
- cover.pdf (1 page), then report.pdf (24 pages)
- Output
- merged.pdf — 25 pages, cover first
List order becomes page order. Drag the cover to the top before merging and it lands on page 1.
Merge PDF
Merging a PDF means joining two or more PDF files into a single document, one after another. Add your files, drag them into the order you want, and download the combined PDF. Pages are copied at full quality, so text stays selectable and images keep their original resolution.
Merging runs entirely in your browser. Your files are never uploaded.
How to
How to use Merge PDF
- 1
Add your PDFs
Drop two or more PDF files onto the upload area, or click it to browse your device.
- 2
Set the page order
Drag rows to reorder, or use the up and down buttons. The file at the top contributes its pages first.
- 3
Merge the files
Click Merge PDFs. The combined document is assembled in your browser.
- 4
Download the result
Save the merged PDF to your device. The page count is shown so you can confirm nothing is missing.
Examples
Merge PDF examples
A quarter of invoices in one file
- Input
- january.pdf (2), february.pdf (3), march.pdf (2)
- Output
- merged.pdf — 7 pages in calendar order
One file is easier to email and archive than three, and the text stays searchable afterwards.
Scanned pages that arrived separately
- Input
- scan-front.pdf (1 page), scan-back.pdf (1 page)
- Output
- merged.pdf — 2 pages
Scanner output often splits into single pages. Merging restores the original two-sided document.
Why use it
What Merge PDF gives you
Nothing is uploaded
Files are read and combined by your own browser, so confidential documents never travel over the network.
Quality is untouched
Pages are copied, not re-encoded. Fonts stay embedded, images keep their resolution, and text stays selectable.
You control the order
Reorder files before merging by dragging, or with the up and down buttons on touch devices.
No file count limit
Merge as many PDFs as you need in one pass, up to 50 MB combined.
Free with no watermark
No account, no trial, and nothing is stamped onto the output.
Good to know
Merge PDF limitations
- Password-protected PDFs must be unlocked first — encrypted files cannot be read.
- The combined size limit is 50 MB, because everything is held in browser memory.
- Bookmarks and outlines from the source files are not carried over. Page content, links and form fields are.
Summary
Merge PDF in short
- Merging joins whole PDFs end to end; the list order decides the page order.
- Pages are copied without re-compression, so nothing loses quality.
- Processing is local to your browser, with a 50 MB combined limit.
- Encrypted PDFs need their password removed before merging.
FAQ
Merge PDF questions
What does merging a PDF actually do?
It creates a new PDF containing every page from the files you added, in the order you set. The originals on your device are left untouched.
How many PDFs can I merge at once?
There is no limit on the number of files. The practical limit is 50 MB combined, since the merge happens in browser memory.
Does merging reduce quality?
No. Pages are copied byte for byte rather than re-rendered. Images keep their original resolution and text remains selectable and searchable.
How do I control which pages come first?
Drag a row up or down in the file list, or use the arrow buttons. The topmost file contributes its pages first, then the next, and so on.
Can I merge password-protected PDFs?
Not directly — an encrypted file cannot be read until it is decrypted. Run it through the Unlock PDF tool first, then merge the unlocked copy.
Are bookmarks and links preserved?
Links inside pages are preserved. Document-level bookmarks (the outline sidebar) are not copied into the merged file.
Does this work on a phone?
Yes. Tap the upload area to pick files, and use the up and down buttons to reorder, since dragging is awkward on small screens.
What if my PDFs use different page sizes?
Each page keeps its own size and orientation. A merged file can legitimately contain both A4 and Letter pages; nothing is stretched or cropped.
How long does merging take?
Usually one to five seconds. Files close to the 50 MB limit can take around twenty seconds on an older phone.
Is there a catch — watermarks or limits?
No. The tool is free, adds no watermark, needs no account, and does not cap how many times you use it.
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