PDF Merger
Combine multiple PDFs into one file, reorder pages by drag and drop.
Drop PDFs here or click to browse
Add as many as you like, then drag to reorder
🔒 Merged in your browser, never uploaded.
About this tool
Combine several PDFs into one document. Drop in your files, drag them into order (or use the arrow buttons), and hit Merge. You get one PDF with every page in the order you chose.
The merge is done by the open-source pdf-lib library running in your browser,
so your documents are never uploaded. No page limits, no watermarks, and it still works if
you go offline after the page loads.
Frequently asked questions
- Are my PDFs uploaded to a server to be merged?
- No. Merging is done by a JavaScript PDF library running in your browser, so your documents never leave your device.
- Can I change the order of the files before merging?
- Yes. Drag the handle on each file or use the arrow buttons. The merged PDF follows the top-to-bottom order in the list.
- Is there a limit on file size or page count?
- No. Since nothing is uploaded there is no server quota; the only practical limit is your device's memory, and hundreds of pages work fine on a typical laptop or phone.