Merge PDF Files
Combine multiple PDFs into one document. Drag to reorder.
Combine multiple PDF files into a single document. Drop the PDFs, drag to reorder, and Dropvert merges them into one — entirely in your browser. No upload, no signup, no watermark, no per-day limit.
How it works
3-step walkthrough
How it works
3-step walkthrough
- 1
Drop the PDFs
Up to 50 files at a time. Dropvert detects each PDF, reads its page count, and lists them in the order you dropped them.
- 2
Reorder if needed
Drag any row up or down to change the merge order. Files are merged top-to-bottom — the first row's pages come first, the last row's pages last.
- 3
Click Merge and download
Dropvert reads every page from every input PDF and copies them into a single new PDF. Page sizes, fonts, and embedded images are preserved.
Why use Dropvert
Local-first, free, no upload required
Why use Dropvert
Local-first, free, no upload required
- Stays in your browser — your contracts, statements, and scans never get uploaded to a third-party server.
- No file size limits other than what your browser can hold in memory (typically several hundred MB).
- Drag-to-reorder UI so you don't have to rename files alphabetically just to control the order.
- Page-count visible per file before you merge.
- Free, no account, no watermark on the output.
Frequently asked questions
6 answered
Frequently asked questions
6 answered
- Is there a limit on how many PDFs I can merge?
- Up to 50 at once. The practical limit is your browser's memory — most laptops handle 50 small-to-medium PDFs without issue. If you need to merge more, do it in batches of 50 and then merge the batches.
- Will the original page sizes be preserved?
- Yes. Dropvert copies pages directly without re-rasterizing, so a mix of A4 and Letter PDFs stays as a mix of A4 and Letter pages — each page keeps its original size. Use PDF Optimizer afterward if you need a uniform output.
- Can I merge password-protected PDFs?
- Dropvert tries to load encrypted PDFs in permissive mode, but if the file requires a password to open, the merge will fail. Unlock the PDF first (with a tool you trust) and try again.
- Does the output keep bookmarks, annotations, and form fields?
- Page content (text, images, vector graphics) is preserved. Document-level metadata like bookmarks and outline trees can't always be merged cleanly across multiple sources, so the output is treated as a fresh document. Form fields on individual pages are preserved.
- Are my files uploaded anywhere?
- No. The entire merge happens in your browser using pdf-lib (an open-source JavaScript library). The PDFs never leave your device.
- Can I merge PDFs on mobile?
- Yes. The page works on iOS Safari and Android Chrome. Memory headroom is tighter on mobile, so very large PDFs (>50 MB total) may slow your browser — desktop is preferred for batch work.
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