How to Merge PDF Files
Learn how to combine multiple PDFs into one file for free, in your browser, without uploading anything — plus how to reorder and split them again.
By the ToolsHub team · Updated May 1, 2026
Merging PDFs means combining several separate documents into a single file — useful for bundling invoices, stitching together scanned pages, or assembling a report from parts. You can do it in a few clicks with our free Merge PDF tool, and because it runs entirely in your browser, your documents are never uploaded to a server.
Steps to merge PDFs
- Open the Merge PDF tool and add two or more PDF files.
- Drag them into the order you want using the up and down arrows.
- Click Merge and download the combined document.
Pages are copied across without re-encoding, so text stays selectable and image quality is preserved — the merged file is exactly as good as the originals.
Why do it in the browser?
Most online PDF services upload your file to their servers to process it. For contracts, invoices, payslips or ID scans, that means handing a third party a copy and trusting their retention policy. A browser-based tool does the work locally, so nothing is transmitted — there is nothing to leak or retain, and no page or file-size limit imposed by a server.
The opposite: splitting a PDF
Need to go the other way? Use Split PDF to pull out a range of pages or break a document into separate files, or Remove Pages from PDF to delete the ones you don't need.