How to merge PDF files with OnyxPDF
- Drop two or more PDF files into the tool (or click to browse).
- Drag the files in the list — or use the ↑ ↓ buttons — to set the merge order.
- Click “Merge PDFs”.
- Download the combined PDF from the output list.
Why do it in your browser instead of uploading?
- No upload: merging happens on your device, so contracts, IDs and statements never sit on a third-party server.
- No 25-file cap and no file-size cap — iLovePDF limits free merges to 25 files; here the only limit is your device memory.
- Pages are copied without re-compression, so text, images and links stay exactly as they were.
- Works offline once the page has loaded — no account, no queue, no waiting room.
Good to know (honest limits)
- Password-protected files must be unlocked first (use Unlock PDF) — an encrypted file cannot be merged until its password is removed.
- Extremely large files (100 MB+, thousands of pages) are bounded by your browser’s memory.
Frequently asked questions
Is it free to merge PDFs here?
Yes, completely. No account, no trial, no page limit and no file-count limit.
Are my files uploaded to a server?
No. Merging runs in your browser with JavaScript; your files never leave your device, and the tool keeps working offline once loaded.
Can I change the order of files before merging?
Yes. Drag files into the order you want, or use the up/down buttons; pages are combined exactly in that order.
Will the merged PDF lose quality?
No. Pages are copied without re-compression, so text, images and links stay as they were.