Combine PDF files into one document, choosing which pages to take and where they go.
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Processed on your device. This tool runs entirely in your browser, your file is never uploaded, so nothing is stored, logged or transmitted.
About the Merge PDF
Merging is the most common PDF job in professional work, and it is almost always about assembling one clean deliverable from parts that arrived separately. A closing packet gathers the contract, the disclosures and the signed addenda. A court bundle gathers the pleading and its exhibits. A month-end submission gathers a dozen supplier invoices that each downloaded as their own file.
This merger keeps the underlying page objects intact rather than flattening them to pictures, so text stays selectable and searchable in the merged file, links and fonts survive, and page dimensions are preserved even when you mix A4 and US Letter originals in the same document.
You are not limited to appending whole files end to end. Each file has a page selector, so you can take only pages 1-3 of one document and page 7 of another, and there is an insert mode that treats your first file as the base and drops the others in before a page number you choose. That is the difference between rebuilding a contract by hand and simply dropping a re-signed page 12 back into the original where it belongs.
It's part of the PDF collection on Toolzy, a growing platform of 135+ free, privacy-first tools built for speed and a great experience on every device.
Also known as: combine, pdf, join, pdf, insert, pages, into, pdf.
Why use the Merge PDF?
No watermarks on your output
Handles multi-page and large PDFs
Keeps your original formatting and quality
Works on Windows, Mac, Linux, Android and iPhone
When to use it
Preparing documents for email or printing
Combining scanned pages or invoices
Reducing file size to meet upload limits
How to use the Merge PDF
Open the Merge PDF. Open the Merge PDF on this page, there is nothing to install and no account needed.
Add your input. Add your file by clicking the upload area or dragging it in. It is read on your device, not uploaded.
Adjust options. Choose any options you need, the Merge PDF updates instantly.
Get your result. Click the action button to download or copy your result. It is 100% free.
Frequently Asked Questions
Can I merge only certain pages instead of whole files?
Yes. Every file in the list has a "Pages to take" box that accepts numbers and ranges such as 1-3, 7. Leave it blank to include the whole file. Pages outside the document are ignored rather than causing an error.
Can I insert one PDF into the middle of another?
Yes. Switch the mode to insert, and your first file becomes the base document. Every other file then gets an "Insert before page" box, so a two-page appendix can land before page 5 rather than at the end. Leave the box blank to append at the end, and note the page number refers to the base file's original numbering, so positions do not shift as other insertions are applied.
Does merging reduce the quality of my PDFs?
No. Pages are copied across as they are, not re-rendered or re-compressed, so text remains selectable, images keep their original resolution and the merged file looks identical to its sources.
Can I merge A4 and US Letter pages in one document?
Yes. Each page keeps its own dimensions, so a merged file can legitimately contain both A4 and Letter pages. If a recipient needs a single uniform size, set that when printing or exporting rather than at the merge step.
Is this suitable for assembling a court bundle or exhibit set?
It handles the assembly and ordering reliably, and the output stays text-searchable, which courts generally prefer. Pagination, indexing and bookmarking requirements vary by jurisdiction and by court, so check the local rules or practice direction that applies to your filing before you submit.
Are there limits on how many files I can merge?
There is no imposed file-count limit. Because merging runs in your browser, the practical ceiling is your device’s available memory, so very large scanned bundles will merge more slowly on a phone than on a laptop.
Is my data private?
The Merge PDF runs entirely inside your browser. Your file is never uploaded, so there is nothing for us to store, log or delete, your data stays on your device from start to finish.
Is the Merge PDF free?
Yes, the Merge PDF is 100% free with no watermarks, no limits and no account needed.
Does it work on mobile?
Yes. The Merge PDF works on any modern browser across desktop, tablet and mobile.
