Merge PDFs
Drop the PDFs you want to merge: the first page of each appears in the list, so you can tell the files apart even when they are all called “scan_0001.pdf”. The list order is the page order, and you change it by dragging or with the arrows.
Your file stays on your device: nothing is uploaded
How it works
Pages are copied together with their resources — fonts, images, colour profiles — and the objects renumbered, because two documents both have an object “1 0 R” meaning different things. That is why merging is not concatenating two files. Text stays text: nothing is rasterised and the quality is the original one. What does not survive the merge: bookmarks, form fields, digital signatures and attachments. They belong to the structure of the source document, and what gets copied are the pages. A digital signature in particular covers the document it signed: keeping it after a merge would leave an invalid signature that looks like a guarantee. If one of the files is unreadable or password protected it is skipped and the document is built from the rest, telling you which one is missing.
Your files are never uploaded. Anywhere.
Not to a server of ours, not to a third party, never. When you pick a file it stays in your browser’s memory: it is read, processed and written back on your device, and you save the result yourself. There is no path that takes it elsewhere, because there is no server to send it to.
- Processed locallyFormats are handled by WebAssembly code running in your browser, not by a remote service.
- Nothing to upload, nothing to wait forOther services send your file to a server and then send it back to you. Here the file never leaves: there is no upload to wait for.
- No accountNo sign-up, no email, no daily limits to get around by paying.
- No files to deleteOthers promise to erase your files after an hour. We have nothing to erase: they never reached us.