Combine multiple PDF files into one document. Drag and drop to reorder, merge locally in your browser.
Drop PDF files here
Add multiple PDFs and arrange them before merging.
No files added yet.
No files added yet.
Add multiple PDFs and arrange them before merging.
Drag in or select multiple PDF files from your device.
Drag and drop to set the page order. Optionally insert separator pages.
Merge locally in your browser and download the combined file.
Yes. OnePDFs is free to use, requires no account, and does not add an extra OnePDFs branding watermark; watermark tools add only the watermark you choose.
Your files stay on your device and are processed locally in your browser; no upload to our PDF processing service is required. The browser keeps the selected files in memory only until the page session ends.
There is no hard limit. You can merge as many PDFs as your browser memory allows. Upload all files and arrange them in any order with drag-and-drop.
Pages are copied from the source PDFs without reflowing their visible content. Check the merged file because interactive forms, scripts, signatures, or uncommon PDF features may not behave exactly as before.
When enabled, a blank page is inserted between each source file in the merged output. This is useful for printing double-sided or visually separating sections.