Queue the files
Add up to twenty PDFs, fifty megabytes each. Every file is inspected locally for page count — encrypted or corrupt files are named and skipped, never silently dropped.
Free tools · Docs
Many PDFs, one document.
Order files, preview page counts and combine them into one PDF — computed on your device, never uploaded.
Order · combine · download
Many PDFs, one document.
Queue files in reading order, preview page counts, merge into a single PDF. Everything happens in this tab — nothing is uploaded anywhere.
Add at least two PDFs, order them, then merge.
How it works
Three steps, all on your device.
The same queue-and-concatenate loop behind every document pipeline, running here without accounts or uploads.
Order them
Move files up and down into reading order, remove strays. The queue shows live page totals before you commit.
Merge and download
One click concatenates everything into merged.pdf with the full page count — ready for inboxes, archives and signatures.
Questions
Merging PDFs, answered.
If you manage servers by hand, see the engineering services behind this tools series.
Is my data uploaded anywhere?
No. Files are read, reordered and concatenated entirely in your browser with pdf-lib — the page makes no network requests with your documents. You can verify this in your browser's developer tools or disconnect from the network after the page loads.
What about password-protected PDFs?
They cannot be merged here: unlocking needs the password and a trust decision that belongs with you, not a web page. The file is named in the error so you can unlock it locally and re-add it.
Are bookmarks, forms or annotations preserved?
Page content and order always survive. Interactive extras — form field values, annotations, bookmarks — may not carry over, since merging rebuilds the document from pages. For archival copies of flat documents this is exactly right.
Is there a file or page limit?
Twenty files and fifty megabytes per file, so one merge cannot exhaust the tab. For bigger jobs, merge in batches and then merge the batches.
Can I split or compress PDFs instead?
Not yet — this tool merges. Splitting and compression are separate tools on the roadmap in the Docs family.