PDF
PDF Merge
Combine multiple PDFs into a single file — reorder freely, runs entirely in your browser.
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About this tool
Drop two or more PDFs, reorder them with up / down buttons, and download a single merged PDF. The merge runs entirely in your browser using pdf-lib — your documents never leave your device.
Common cases: combine scanned pages into one report, stitch chapters into a single ebook, batch contracts into one signing pack.
Privacy
Processing happens in your browser whenever the tool can run locally. Your source files are not uploaded to PixWarp servers.
PixWarp vs upload tools
| Feature | PixWarp | Upload tools |
|---|---|---|
| File privacy | Runs in your browser | Often uploads to a server |
| Account required | No signup | May require login or email |
| Watermark | No watermark | Often adds branding on free plans |
Frequently asked questions
- Does my PDF get uploaded?
- No. Merging happens entirely in your browser using pdf-lib. Your files never leave your device.
- How many PDFs can I merge at once?
- There's no hard limit, but very large totals (>500MB combined) may run into browser memory limits.
- Are bookmarks, links, and form fields preserved?
- Page content (text, images, vector graphics) is preserved exactly. Document-level metadata (outlines, named destinations) and form fields can be partially preserved depending on the source PDFs.
- Can I reorder pages within a PDF, not just merge whole files?
- v1 merges whole files in the order you list them. For per-page reordering or extraction, use the PDF Split tool to break a PDF into individual pages first, then re-merge.