Organise
Merge PDF.
Combine multiple PDF documents into a single file, in the exact order you choose, directly inside your browser.
- Runs in your browser
- Never uploaded to a server
- GDPR compliant
Drop PDFs to merge
Drag or click — order matters and can be changed below
Merge PDF files in your browser
Combining PDFs is one of the most routine tasks in office work — assembling expense reports, signing contracts, bundling scanned receipts. It is also one of the most quietly risky things to do online. Most merge tools require you to upload your files to a stranger's server, where they sit in a queue alongside everyone else's documents, sometimes for hours.
PDFSamurai takes a different approach. The merge happens entirely inside the browser tab you have open right now. The open-source pdf-lib library reads the bytes of each PDF, copies the page trees into a fresh document in memory, and offers you the result as a download. Nothing crosses the network. Closing the tab erases every trace.
How to merge PDFs
- Drag one or more PDF files into the upload area on this page.
- Reorder them using the up and down arrows.
- Press Merge. The combined file downloads automatically.
What stays preserved
Text, fonts, embedded images, hyperlinks and form fields are all preserved as-is during the merge. Top-level outlines (bookmarks) from individual files are currently flattened in the free tier.
Questions
Frequently
asked.
- On PDFSamurai, merging is done entirely in your browser using JavaScript. Your files are never uploaded to a server, never stored, and never logged.
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