Merge PDFs
Pick two or more PDF files, put them in the order you want, and download one combined PDF. Files never leave your device.
How it works
This uses the pdf-lib library running entirely in your browser tab. Add files, drag to reorder if needed, and press merge — the combined PDF is generated locally and offered as a download. No file size is uploaded anywhere.
Limits: password-protected PDFs can't be merged until they're unlocked first. Very large files (100+ MB total) may be slow depending on your device's memory.