Merge PDF files without uploading them
Combine two or more PDFs into one document. The merging happens inside your browser tab, so your files are never sent to a server.
Open UnsentPDF Free · no account · nothing is uploaded
How to merge PDFs
- Open UnsentPDF and choose “Open a PDF” (or drop the first file onto the window).
- Select the page after which the other file should go, then choose “Insert pages from another PDF…”. Repeat for each file.
- Drag the page thumbnails to fine-tune the order.
- Choose “Export PDF”. The merged file is checked, then you save it.
What the result keeps
- Bookmarks of each file (grouped under the file’s name), links, named destinations and page labels.
- Form fields (a field whose name is already taken is renamed, and the export summary tells you).
- Accessibility tags, layers, attachments and article threads.
Why it stays private
UnsentPDF is a web page that does all its work on your device. Your PDF is read by your browser and never sent to a server, not even ours. Once the page has loaded, it also works offline. How to check this yourself.
Good to know
- Scripts inside the added PDFs are not copied.
- Merging rewrites the file, so existing digital signatures stop being valid. You are warned first.