📎 Merge PDF
Combine multiple PDF files into one — free, fast, and private.
Drop PDF file(s) here
or click to browse
How to Merge PDF
Upload your file(s) by dragging and dropping or clicking the upload area above.
Click the button to process your files instantly in your browser.
Your processed file will download automatically. No signup needed!
Performance & Details
Merges up to 50+ PDFs in a single session. Average merge time: under 3 seconds for 10 files totaling 20 MB. Uses pdf-lib (open-source) — no server upload, no file size cap beyond browser memory.
All processing uses pdf-lib (open-source). Files stay in your browser — zero server uploads. Last verified: May 2026.
Merge PDF — Available Nationwide
Merge PDF — Available Across Europe
Need More?
Get unlimited access to all tools, batch processing, and priority support for just $5/month.
Go Pro — $5/monthMerge PDF — Frequently Asked Questions
How many PDFs can I merge at once?▼
There is no limit on the number of files. You can merge 2, 10, or 50+ PDFs in a single session.
Will merging reduce the quality of my PDF?▼
No. Our tool preserves the original quality, fonts, images, and formatting of every page.
Is it safe to merge confidential documents?▼
Absolutely. All processing happens locally in your browser — your files are never uploaded to any server.
Can I merge PDF files on my phone?▼
Yes! The tool works on any smartphone browser. Open the site on your iPhone or Android and merge PDFs on the go.
What if my PDFs have different page sizes?▼
No problem. Our tool handles mixed page sizes and orientations seamlessly in the merged output.