How to use Merge PDF
Combine two or more PDFs into a single file directly in your browser. Drag to reorder, click merge, and download — the merged file is assembled locally with pdf-lib so nothing is uploaded. Handy when you need to stitch a cover letter, CV, and portfolio into one attachment, or batch a stack of receipts into one printable.
Good for
- •Stitching a multi-document submission (cover letter + CV + portfolio)
- •Combining a scanned contract with its signed amendment
- •Producing one printable PDF from a stack of receipts
- •Bundling invoices for a single end-of-month upload
- •Assembling a course pack from multiple chapters or articles
Not good for
- •Merging more than ~50 large files at once — browsers will run out of memory
- •Merging password-protected files (unlock them first)
- •Producing a master bookmark tree across inputs (single-file bookmarks only)
- •Combining files of wildly different page sizes into a single uniform output
Walkthrough
Step by step
- 01
Open the Merge tool
Tools menu → Merge PDF. The page is just a drop zone and an ordered list — minimum chrome, maximum clarity.
- 02
Add your PDFs
Drop multiple files at once, or click to browse. The order they appear in the list is the order they'll be merged. Add more later by dropping again — they append to the end.
- 03
Reorder
Drag any row up or down with the handle on the left to put it in your preferred order. Click the X to remove a file. The preview thumbnails update so you can sanity-check.
- 04
Name the output
Click the output filename above the merge button to rename. Defaults to merged-{date}.pdf — fine for one-offs, worth editing for files you'll have to find again.
- 05
Click Merge
We assemble the new PDF in-browser using pdf-lib. A progress bar shows per-file as pages are copied. Typical 5-file merge takes 2-3 seconds.
- 06
Download
The browser downloads the merged file automatically. The originals stay untouched and the working copies are released from memory the moment the tab closes.
Tips
- •Mixing portrait and landscape pages? They keep their original orientation in the merged output — no auto-rotation.
- •Need a custom page order across files (e.g., interleave odd/even pages from two scans)? Split each first, then merge the resulting pieces.
- •If the merged file is too big to email, run Compress PDF on the output — typically halves the size with imperceptible quality loss.
- •Filename for the merged result is editable before download — saves a rename step in Finder/Explorer afterwards.
- •Hyperlinks inside each input survive the merge; cross-document links (which barely work anywhere) are dropped.
Frequently asked
Ready to use Merge PDF?
Open Merge PDFDocverix Platform
Need workflow + audit on every doc your team handles?
Docverix Platform turns these tools into a routed, audited pipeline — validator → supervisor → approver, with a complete audit trail.