Merge PDF

About Merge PDF

Last updated: October 2026

Paperwork arrives in pieces - a signed page scanned separately, an appendix from somewhere else, three receipts that have to go in as one attachment - and most of the places you need to send it accept exactly one file. Merging joins them into a single PDF in the order you add them, with the pages, text and bookmarks of each original intact. This is a structural operation rather than a re-render: the pages are copied into a new document as they are, so nothing is rasterised, nothing is recompressed, text stays selectable and quality is identical to the inputs. Everything happens in your browser, which for a stack of documents that typically includes contracts, IDs and bank statements is the part that matters most. There is no cap on how many files you combine or how large they are, beyond what your own device can hold in memory.

How It Works

Each PDF is parsed with pdf-lib and its pages are copied into a new document in the order you added them, then saved. No page is re-rendered or recompressed, so text and quality carry through untouched. The whole operation runs in your browser.

Use Cases

• •Combining a scanned signature page with the rest of a contract
• •Joining several receipts or invoices into one attachment for an expense claim
• •Assembling an application pack that must be submitted as a single file
• •Appending an appendix or addendum to a report
• •Putting a multi-part scan back together in the right order

You Might Also Like

If you find Merge PDF useful, check out these related tools: JPG to PDF Converter, Audio Merger, and Video Merger. All tools run entirely in your browser with no uploads or signups required.