Merge PDF
Combine several PDF files into a single document, in the order you choose. Everything runs inside your own browser, so your files never leave your device.
Drag your files here
or click to select
How to merge PDF in 4 steps
Add your files
Drag your PDFs into the upload area or click to select them. You can add several at once.
Set the order
Drag the thumbnails to define the exact sequence in which the documents will appear in the final file.
Merge the documents
Click Merge PDF. Processing happens on your device and usually takes only a few seconds.
Download the result
Download the combined PDF. No copy of your file is stored anywhere.
What merging PDFs is for
Combining PDFs is one of the most common tasks for anyone who works with documents. Instead of sending five separate email attachments, you gather everything into a single file that is easier to open, organise and archive. This applies to contracts with appendices, reports split into chapters, scanned receipts or a portfolio built from loose pages.
A single document also avoids confusion over order and versions. When each part is a separate file, it is easy for someone to open them in the wrong sequence or miss an attachment. By consolidating everything into one PDF, the order stays fixed and the whole set becomes a single item to share or print.
Up to 30 files at a time, 100 MB each
The limit of 30 is not arbitrary: every open PDF holds memory in the browser while the merge runs, and going beyond that stalls modest devices halfway through — worse than refusing up front.
If you have more, merge in two rounds: join 30, then merge that result with the rest. The generated PDF goes back in as a normal input.
What survives the merge, and what doesn’t
Pages are copied with their content intact: text stays selectable, images are not recompressed and quality matches the original.
What gets left behind are the elements that belong to the whole document rather than to a page: bookmarks, fillable form fields and digital signatures do not carry over. A digital signature would be invalidated anyway — it covers the original file, which no longer exists.
Tips for merging PDFs without headaches
Check the order before generating the file. Rearranging the thumbnails takes seconds and saves you from redoing the whole process later. If you are putting together a report, keep the cover first and the appendices last.
Pages of different sizes are preserved as they are. If one document has A4 pages and another has landscape pages, the final PDF keeps each one in its original format, without distorting the content.
If the final file ends up large, merge first and then use the compress PDF tool. That way you keep everything organised and reduce the size only at the end, once everything is in place.
Nothing is uploaded
The merge happens inside your browser: the files are read into your device’s memory and the final PDF is assembled right there, with no upload.
Use cases
- Combine a contract and its appendices into a single file for signing
- Assemble a report from separate chapters
- Combine scanned pages into one document
- Gather receipts and invoices for an expense report
- Create a portfolio or handbook from loose PDFs
Frequently asked questions
Is there a limit on files or size?
You can merge several PDFs at once. The practical limit depends on your device's memory, since processing is local. For very large files, prefer a computer over an older phone.
Can I choose the page order?
Yes. Before merging, you drag the thumbnails to set exactly the sequence in which the documents will appear.
Is document quality reduced?
No. Merging PDFs simply copies the pages into a new file without recompression. The content stays identical to the original.
Does it work with password-protected PDFs?
Password-protected files need to be unlocked before merging. You can use the unlock PDF tool and then come back to merge the documents.
General questions about the site
- Is it free?
- Yes — no sign-up, no usage limit and no watermark.
- Does it work on mobile?
- Yes, straight from your Android or iPhone browser.
- Do I need to install anything?
- No. No software, no extensions.
- Is my file sent to a server?
- On tools marked as local, no — the file never leaves your device. Only three tools use a server, and each says so on its own page.
How this works inside, and what the site does not do, is on the About page.