Merge PDF files into one
Combine several PDFs into one document, drag to reorder files, and pick page ranges per file. Runs in your browser — nothing is uploaded.
- Runs in your browser
- Files are never uploaded
- Free, no account
Add two or more PDFs to begin. You can reorder them afterwards and, if you only need part of a file, type a page range such as 1-3, 8, 12- next to it.
How to merge PDF files
- Drop every PDF you want to combine onto the box above, or click it to pick files. You can add more files later without losing the ones already in the list.
- Put them in the right order. Drag a row by the handle on the left, use the up and down buttons (they work with the keyboard), or hit Sort A→Z for filename order.
-
Optionally narrow a file down to certain pages. Type a range such as
1-3, 8, 12-in the Pages box next to it; leave it empty to take the whole document. - Press Merge and download the single combined PDF.
The whole process runs inside this browser tab using WebAssembly. Nothing is uploaded, so merging a hundred-megabyte set of scans is as private as opening them in a desktop reader — and there is no queue, no watermark and no page cap.
Page range syntax
Every range box on this site understands the same shorthand. Pages are counted from 1 and
duplicates are ignored, so 2, 2-4 yields pages 2, 3 and 4.
| You type | You get |
|---|---|
| (empty) | Every page of the file |
| 5 | Page 5 only |
| 1-3 | Pages 1, 2 and 3 |
| 10- | Page 10 to the last page |
| -4 | The first four pages |
| 9-5 | Pages 9, 8, 7, 6, 5 — reversed |
| odd / even | All odd or all even pages |
| last | The final page |
What merging does and does not keep
Pages are copied at the object level: the same fonts, the same vector paths, the same image streams. Nothing is re-rendered, so a merged file is visually identical to its sources and text stays selectable and searchable.
- Kept: page content, embedded fonts, images, page size and rotation, link and comment annotations, filled form-field appearances.
- Rebuilt: the document catalogue, page tree and cross-reference table, which is why the merged file is usually slightly smaller than the sum of its parts.
- Not carried over: document-level bookmarks (outlines), attachments, JavaScript actions and digital signatures — a signature can only ever cover the file it was applied to, so any merge invalidates it.
Common uses
- Combining a scanned contract, its annexes and an ID copy into one submission file.
- Putting a month of receipts or invoices into a single expense claim.
- Assembling a portfolio from separately exported chapters, keeping only the pages you want from each.
- Rebuilding a document that a scanner split into several files, in the correct order.
If the merged file is larger than an upload limit, run it through the compressor afterwards — for scanned pages a re-render at 110 DPI typically removes most of the weight.
Questions
Is there a file size or file count limit?
No fixed limit. Your device does the work, so the practical ceiling is available memory — a few hundred megabytes of PDFs is normally fine on a laptop, less on an older phone.
Can I merge only some pages from a file?
Yes. Each file in the list has a page-range box. Leave it empty to take the whole file, or enter something like 1-3, 8, 12- to take only those pages in that order.
Does merging change the quality of my PDFs?
No. Pages are copied object-for-object into the new document, so text stays selectable, vectors stay sharp and images are not re-encoded.
What happens to bookmarks, forms and links?
Page content, annotations and form field appearances are carried over. Document-level outlines (bookmarks) from the source files are not rebuilt in the merged file.
Can I merge password-protected PDFs?
Not while they are still encrypted. Open the file in a PDF reader, remove the password or print it to a new PDF, then merge the unprotected copy.