Merge PDF
Combines several PDFs — and images mixed in with them — into a single PDF, in the order you arrange. Drop files in, reorder the list, merge. Everything runs on the pdf-lib library in your browser, so nothing is uploaded and there is no page or file-count limit.
How to use
- Drop PDFs and images onto the panel. You can keep adding files.
- Reorder the list — the merged file follows it top to bottom.
- Click merge and download the combined PDF.
- Check the page order in a viewer before sending it on.
When you actually need this
- Combining a scanned ID, a form and a photo into the single PDF an application portal demands.
- Stitching chapters exported separately into one document.
- Appending a signed last page back onto the original contract.
- Turning a folder of receipts — some PDF, some JPG — into one file for expenses.
How pages are combined
PDF pages are copied into the new file as-is, without re-rendering, so text stays sharp and selectable and file size roughly equals the sum of the parts. Images are placed each on its own page sized to the image. If the merged file needs to be smaller, run it through the PDF compressor afterwards; if pages come out in the wrong orientation, fix them with the rotate tool first — merging preserves each page exactly as it was.
Related tools
FAQ
Is my PDF uploaded anywhere when I use Merge PDF?
No. The file is opened and rewritten inside your browser, so contracts, invoices, medical records and anything else confidential never leave your device. This also means the tool keeps working if your connection drops mid-task.
Does Merge PDF preserve the original quality and text?
Yes. Pages are copied as they are, so vector text stays selectable and searchable rather than being flattened into an image. Only tools that explicitly re-encode images will change the visual data.
Can Merge PDF open a password-protected PDF?
An encrypted PDF has to be unlocked before it can be processed. Open it in your PDF reader, save an unprotected copy, and then run that copy through the tool.