How many PDFs can I merge?

Up to 20 PDFs per merge in the free tier.

Will bookmarks be preserved?

Basic merging is supported. Bookmark preservation is coming in a future update.

Not in this tool — use Split PDF to extract pages, then merge the parts you want.

Files above 100 MB show a warning. For very large files, splitting first is recommended.

Yes! After first load, MilliPDF works offline as a PWA.

Combine multiple PDFs into one — drag to reorder, merge in seconds, no upload.

🔒 Your files never leave your device

Drop your PDF files here

PDF files only · drag to reorder · up to 20 files

📎 Click⌨️ Paste📸 Camera

Upload two or more PDFs, drag to reorder them, and click Merge. Your combined PDF downloads instantly.