Merge PDF
Merge PDF files free — combine up to 20 PDFs into one document in the order you choose. Drag to reorder, then merge privately in your browser.
Quick answer
Merge PDF online free — combine two or more PDFs into one document in the exact order you choose. Built for anyone who needs a single attachment instead of a folder of fragments: applicants, accountants, and students. Merge up to 20 files at once; everything runs in your browser, so nothing is uploaded and it all disappears when you close the tab.
Drag & drop PDF files here
or click to browse files
PDF files only — up to 20MB each
How to merge PDF files online
Merging joins two or more PDFs into a single document, with the pages appearing in exactly the order you arrange them — most merges finish in a couple of seconds. Pages are copied into the new file rather than re-exported, so text stays selectable and nothing is re-compressed. Everything happens locally in your browser: there is no upload step, no server queue, and no copy of your document anywhere but your own device.
Add your PDF files
Drag and drop your files onto the tool above, or click to browse. You can merge up to 20 PDFs at once, each up to 20 MB, and every row shows its file size and page count as soon as it is added.
Arrange them in order
Drag the file rows up or down until they are in the sequence you want. The order shown on screen is exactly the page order in the final PDF, so the document you build is the document you get.
Merge and download
Click Merge PDFs and the combined file is built on your device. If one file cannot be read, you get a message naming that specific file and the rest of the list is left intact so you can swap it out and try again.
When merging PDFs comes in handy
Job and university applications
Turn a cover letter, CV, and portfolio into one clean PDF for a portal that accepts a single upload — instead of attaching three files and hoping the order survives.
Business paperwork
Bundle invoices, receipts, and statements into one monthly packet for accounting, or assemble signed contracts into a complete agreement your client can archive as a single file.
Study and research
Combine lecture slides, journal articles, and your own notes into one document that is easier to print, share, and search than a folder of loose files.
Key features
Drag-and-drop page order
Arrange the files visually before merging — the row order on screen is exactly the page order in the result, with no guesswork.
Pages copied, not re-exported
Each page is copied as-is into the new document, so text stays selectable and searchable and image quality is untouched.
Named errors, not dead ends
If a file cannot be read, the message tells you which one and why, and the rest of your list is preserved so you can retry immediately.
Supported formats
- Input: PDF (.pdf) — up to 20 files per merge, 20 MB each
- Password-protected PDFs must be unlocked first (use Unlock PDF), then merged normally
- Output: one standard PDF (.pdf) that opens in any reader, in your chosen order
- Works in any modern desktop or mobile browser — no install, no account, nothing uploaded
Privacy and security
Limitations
- Up to 20 files per merge, 20 MB each. The uploader enforces both limits and tells you when a file is rejected.
- Very large documents are bound by your device's available memory rather than a server quota, so merging a hundred 20 MB files will be slow on a low-memory device.
- Merging copies whole files — you cannot pick individual pages here. Extract the pages you need with Split PDF first, then merge the results.
- Bookmarks, form fields, and signatures are not carried into the merged file; the output is a plain page sequence.
Related Tools
All tools
Split PDF
Extract pages or split a PDF into separate files in a couple of clicks.
Need only some of the pages first? Extract them, then merge the extracts into one file.
Compress PDF
Reduce PDF file size while keeping quality — great for emailing.
Merged file too big to email? Compress the combined PDF as the next step.
Frequently Asked Questions
How many PDFs can I merge at once?
Up to 20 files per merge, each up to 20 MB. The uploader enforces both limits, so if you add a 21st file you get a clear message instead of a silent failure. Very large documents are limited by your device's memory, since everything runs locally.
Can I choose the order of the pages?
Yes — drag the file rows up or down before merging. The order on screen is exactly the page order in the final document, so you can put a cover letter before a CV or an invoice before its receipts.
Does merging reduce quality or break links?
No. Pages are copied into the new document without re-encoding, so text stays selectable and searchable and images keep their original resolution. Internal links and bookmarks are not carried over.
Can I merge a password-protected PDF?
Not directly. Unlock it first with our Unlock PDF tool (you need the password), then add the unlocked file here and merge it normally.
Are my files uploaded to a server?
No. Merging runs entirely in your browser. Files are read into local memory, combined there, and saved back by your own browser — nothing is transmitted or stored.