Sheafly

Merge PDFs without losing the table of contents.

Most PDF mergers throw away bookmarks, or leave them pointing at the wrong pages. Sheafly reads each document's outline before merging and rebuilds it in the combined PDF, so every chapter and section still lands where it should.

Combines any number of PDFs, in whatever order you want
Keeps nested tables of contents, re-linked to the correct pages
Turns images (PNG, JPEG, TIFF, HEIC and more) into PDF pages
Unlocks password-protected PDFs for merging, and can password-protect the result
Works by drag and drop, or entirely from the keyboard

Everything runs locally on your Mac. Sheafly has no network access, no accounts, no analytics and no ads. Your original files are never modified.

Download on the Mac App Store

Requires macOS 14 or later.

Support

The Help menu inside the app covers everything in detail. Stuck anyway, or found a bug? Email support@sheafly.app and a human will get back to you.