PDF CombinerFree
Merge several PDFs into one file in any order. Nothing is uploaded.
Free for Duhi members
Create a free account (takes 30 seconds) to use this tool and all 13 free KDP tools, plus the member community.
How it works: the pages of each PDF are copied in the order shown into a new file, combined.pdf, using pdf-lib in your browser. Page sizes, text and images are copied as they are; nothing is re-compressed. Bookmarks and form fields are not carried over.
Protected PDFs: files with a password or permission lock cannot be decrypted here, and their pages may come out blank. Save an unprotected copy first. For KDP, remember the final interior must use a single trim size: check that all parts share the same page size.
Make your next book faster
Prompt packs and AI tools from Duhi for KDP creators.
Turn any topic into a self-checking, no-prep interactive PDF learning game for kids. 10 game types, 8 languages, one-time payment.
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