How to Merge PDF Files Online for Free (Step-by-Step)
· 4 min read · Tutorial
Why You Might Need to Merge PDFs
There are dozens of everyday situations where combining PDF files is the right move: attaching supporting documents to a contract, compiling a report from multiple sources, assembling scanned pages into a single archive, or packaging invoices for an accountant. Rather than sending five separate attachments, a single merged PDF is cleaner, harder to lose, and easier to print.
What You Need
- A modern browser — Chrome, Firefox, Safari, or Edge all work.
- Your PDF files ready to upload (up to 50 MB per file).
- Nothing else — no account, no software installation.
Step-by-Step: Merge PDFs with MagPDF
- Go to magpdf.com and click "Merge PDFs" in the Merge & Convert section.
- Click "Choose Files" or drag your PDFs directly into the upload area.
- All uploaded files appear as cards showing the filename and page count.
- Drag the cards to reorder them — the first card becomes page 1 of the output.
- Click the blue "Merge PDFs" button and wait a few seconds for processing.
- Click "Download PDF" — your merged file downloads immediately.
Tip: You can merge 10 or more PDFs in a single session. There is no limit on the number of files — only on individual file size (50 MB per file).
How the Page Order Works
The order of the cards in the uploader is the exact order pages appear in the merged PDF. The first file's pages come first, then the second file's pages, and so on. You can drag and drop cards to reorder at any point before clicking Merge.
Common Questions
- What if I need to merge PDFs with different page sizes? The output PDF keeps each page at its original size — landscape and portrait pages can coexist in one merged PDF.
- Does merging affect quality? No. MagPDF uses lossless merging — no recompression, no quality loss.
- Can I merge a PDF and images together? Yes — use the "Merge PDFs + Images" tool which accepts both .pdf files and image files in one upload.
Alternatives to MagPDF for PDF Merging
Adobe Acrobat requires a paid subscription for merging. iLovePDF and Smallpdf impose file size limits and daily usage caps on their free tiers. MagPDF has no size limits on the number of files, no watermarks, and no daily cap.