TL;DR: Drop two or more PDFs, drag to reorder, click Merge — you get one combined PDF in seconds, no sign-up, no watermarks.
Merge PDF files online for free — combine multiple PDF documents into a single file in seconds. Drag, drop, and reorder pages before merging. No file size limits, no sign-up, no watermarks. Your files are processed securely and never stored.
Every PrivaTools tool — including Merge PDF — is genuinely free with no premium tier, no per-day limit, and no watermark on the output. Files are deleted from the server within seconds of your download completing. Source code: github.com/taiyeba-dg/privatools.
There is no hard cap on the number of files. Each individual file must be under 500 MB. We routinely handle merges of 30–50 files in one call; if you need more, run the merge twice.
Yes. Existing bookmarks, internal links, and external hyperlinks from every input file are preserved in the merged output. Bookmarks are renamed with a numeric prefix so two PDFs with the same chapter titles don't collide.
No. The output has zero watermarks, no PrivaTools tag in the metadata, and no header/footer added. iLovePDF and Smallpdf both add a watermark or limit free merges to 2 files; PrivaTools has no such limit.
Yes. Files enter an isolated Docker container, are processed in temporary memory, and are unlinked the moment the response is delivered. They are never written to permanent storage, never logged, and never used to train any model. The merger code is open source on GitHub.
500 MB per file with no per-day or per-month quota. The merged output can be any size — the only constraint is each input file.
No. No account, no email, no sign-up. Drop the files, drag to reorder, click Merge, and download. The privacy guarantees come from the architecture, not from a user profile.
See how PrivaTools compares to iLovePDF, Smallpdf, Adobe Acrobat, and other free PDF tools.