Merge PDF
Combine multiple PDF files into one document — pick the order, merge in seconds. Your files are processed in your browser and never uploaded.
How to merge PDF files
Select two or more PDF files, check the merge order, and click Merge PDFs. The combined document downloads instantly — no watermark, no page limits, no sign-up. Unlike most online PDF tools, the merge happens inside your browser: contracts, ID scans and confidential documents are never uploaded to any server.
Why merge in the browser?
Every other online PDF tool uploads your files to their servers for processing. That is a real risk for sensitive documents — employment contracts, identity documents, financial records. Ajiez runs the merge as JavaScript on your own device: you could disconnect from the internet after loading the page and it would still work. Same result, zero exposure.
Frequently asked questions
Is there a file size or page limit?
The practical limit is your device's memory — documents of several hundred pages merge fine on an average computer. There is no artificial limit and no watermark on the output.
Will the quality or formatting change?
No. Pages are copied byte-for-byte into the new document — fonts, images and layout are preserved exactly as they were.
Can I change the order after choosing files?
Yes — remove a file from the picker and re-add it in the right position, or use the file list order. For complex reordering of pages within a single PDF, the Split PDF tool lets you extract and recombine pages.