PDF Merge & Split
Combine several PDFs into one file, or pull a page range like 1-3,7 out of a document into a new PDF. Files never leave your browser — everything runs locally. No upload, no server, no account.
About this tool
Merging copies every page of every file, in the order shown in the list, into a fresh PDF. Splitting parses one document and copies just the pages you name into a new file — 1-3,7 gives you pages 1, 2, 3 and 7. All parsing and writing happens in the page with the pdf-lib library, which is served from this site and runs entirely in your browser: your documents are never uploaded anywhere.
Honest limitations: this tool copies pages as-is and cannot recompress them — pdf-lib doesn't re-encode images, so the output is roughly the sum of the pages you keep, never smaller. Password-protected (encrypted) PDFs can't be read; remove the password first. Form fields and bookmarks may not survive a merge intact, and very large files must fit in browser memory.