How to Merge PDF Files Online for Free
Combining a few PDFs into one document is one of the most common document tasks there is — a signed contract plus its appendix, a stack of scanned receipts, chapters of a report. Here's how to do it online in under a minute, with no software to install.
How to merge PDFs, step by step
- Open Merge PDF and drag in every file you want combined, or click to browse. There's no limit on how many you can add — each just needs to be under 200MB.
- Set the order. Files are merged in the order they're listed, top to bottom. Use the up/down arrows next to each one to rearrange them before merging — this is the step people skip and then have to redo.
- Click Merge. The files are combined into a single PDF in seconds — no page-by-page reassembly, all original formatting, images, and text stay exactly as they were.
- Download the result. Your merged PDF downloads immediately. The source files and the merged output are both deleted from the server once you're done — nothing sits around afterward.
Tips for a clean merge
- Rename your files with a number prefix (01-cover.pdf, 02-body.pdf) before uploading — it makes getting the order right at a glance much easier.
- If the combined file ends up larger than you'd like for emailing, run it through Compress PDF afterward — merging doesn't compress anything, it just concatenates.
- Need the opposite — pulling specific pages out of one big PDF instead of combining several? That's Split PDF.
Frequently asked questions
Is there a limit on how many PDFs I can merge?
No — upload as many files as you need. Each file can be up to 200MB.
Can I change the order of the pages before merging?
Yes — after uploading, use the up/down arrows next to each file to reorder them. Files are merged in the order shown, top to bottom.
Are my files kept after I merge them?
No. Source files are deleted right after the merge completes, and the merged file is removed once you download it or leave the page.