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Combine multiple PDF files into one — all processing happens in your browser.
Combine multiple PDF files into a single document in any order using pdf-lib running in your browser. Drag and drop files to reorder them before merging. No files are sent to a server — merging is entirely local.
There is no hard limit, but very large or numerous PDFs may exhaust browser memory. Merging up to 20 typical documents is generally reliable.
Internal links may break after merging since page numbers shift. External links and basic content are preserved.
No. Encrypted PDFs must be unlocked first. Use a PDF reader to remove the password, then merge.