How to merge PDFs
- Add your files. Drop two or more PDFs on the box above, or click to select them. You can add more at any time with ”+ Add more”.
- Put them in order. Use the ↑ and ↓ buttons. The first file in the list becomes the first pages of the merged PDF.
- Merge and download. Click Merge PDFs. The combined file is ready in seconds, with a preview of its first page.
Lossless by design
Merging should never change how your documents look. This tool copies each page’s original content (text, embedded fonts, images and drawings) straight into the new file without re-encoding anything. That means:
- Text stays real text: searchable, selectable and sharp at any zoom.
- Images keep their original quality: nothing is recompressed.
- The merged size is roughly the sum of the parts. Byte-identical images or fonts that appear in several of your files are stored only once.
If you need a smaller file afterwards, that’s a separate, deliberate step: run the result through Compress PDF.
Good to know
- Bookmarks and outlines from the original files are not carried over into the merged document. Page content, including links inside the page, is preserved.
- Fillable forms: what’s typed into a form stays visible, but the merged file is no longer fillable. Complete and save forms before merging them.
- Password-protected PDFs have to be unlocked first; the tool will tell you if a file is encrypted.
- Mixed page sizes are fine. Each page keeps its own size and orientation.
Common uses
- Combining a cover letter, CV and certificates into one application file.
- Joining scanned pages that your scanner saved as separate PDFs.
- Putting invoices or receipts for a month into a single document for your accountant.
- Assembling a contract with its appendices and signature page.
Have photos instead of PDFs? Use JPG to PDF to turn them into pages, then merge. Need to remove or rearrange pages within one file? Split PDF can extract exactly the pages you want.
Private by default
Many online mergers upload every file you give them. Here, the page loads a small program into your browser and the merge happens on your own device. Your documents are never transmitted, so there is nothing to intercept, log or leak, and the merged file exists only in your browser until you download it.
Merging large files
Each PDF is read into your device’s memory while merging. On a laptop, hundreds of megabytes are fine; on an older phone, very large scans may be slow or run out of memory. If that happens, merge in smaller batches (for example, two halves) and then merge the results, or compress the biggest files first with Compress PDF.
Frequently asked questions
Does merging reduce quality?
No. Pages are copied as they are: text, fonts, images and vector graphics are not recompressed, so the merged file looks identical to the originals. Fill in any forms before merging, because merged forms are no longer editable.
How many PDFs can I merge?
There's no limit set by us. Because merging happens on your device, the practical limit is your device's memory. Dozens of ordinary documents are no problem on a laptop or modern phone.
Can I change the order of the files?
Yes. After adding files, use the arrow buttons to move each one up or down, and remove any you added by mistake. The merged PDF follows the list from top to bottom.
Are my files uploaded?
No. The merge runs in your browser. Your PDFs are never sent to a server.
The merged file is too big for my upload. What now?
Run the merged PDF through Compress PDF, or Compress PDF to 200 KB if you have a strict limit. Merging first and compressing once gives the best result.