How to Merge PDF Files Online (Free)
A signed contract, a scanned ID, a cover letter — when several PDFs need to travel as one document, merging beats attaching five separate files. Here's how to combine them in seconds, right in your browser.
Steps
- Upload your PDFs at Stelluna's Merge PDF — select multiple files at once, up to 50MB each.
- Check the order. Each file becomes a block of pages, in the order shown.
- Use the up/down arrows next to a file to move it, or remove one you don't need.
- Click "Merge PDFs" and wait a moment while it's combined in your browser.
- Download. The finished, combined PDF.
Ready to try it? Free, instant, your files never leave your device.
Open Merge PDFDoes merging affect page quality or content?
No — pages are copied directly from the source files into the combined PDF, not re-rendered or re-compressed, so text stays selectable and images keep their original resolution. The only thing that changes is which document the pages live in.
FAQ
Is it free?
Yes — no account, no watermark, no limit on how many PDFs you merge.
Do my PDFs get uploaded anywhere?
No. Merging runs entirely in your browser — your files never leave your device.
How many PDFs can I merge?
Up to 50MB per file, and up to 20 PDFs in one merge.
Can I reorder the files before merging?
Yes — use the up/down arrows next to each file any time before you click "Merge PDFs" to change its position in the final document.
Can I merge a password-protected PDF?
Not currently — encrypted PDFs need their password removed first.