Merge PDF

Join several PDF files into one document. Private: files are processed on your device.

How to merge PDF files

  1. Drop your PDFs on the box above, or click it to select them. You can add more files afterwards.
  2. Arrange them with the up and down arrows. The merged document follows the order of the list from top to bottom.
  3. Press Merge PDFs and download the combined file.

What is kept and what is not

Every page is copied unchanged: text, fonts, images, page sizes and orientation all stay as they were, so a document mixing A4 portrait and landscape pages merges without problems. There is no watermark and no page limit.

Features that belong to a whole document rather than to a page, such as bookmarks (the outline panel) and some interactive form fields, may not carry over into the merged file. If you need to keep a fillable form editable, merge first and check the result before deleting the originals.

Tips

  • To add only part of a document, extract the pages you want with the Split PDF tool first, then merge the pieces.
  • Rename the downloaded file to something descriptive before sending it.
  • To include photos or scans, turn them into a PDF with the Image to PDF tool and add that file here.

Frequently asked questions

Are my PDF files uploaded to a server?

No. The files are read and combined by your browser on your own device. Nothing is uploaded, so contracts, statements and other confidential documents stay private.

Does merging reduce the quality of my PDFs?

No. Pages are copied into the new document exactly as they are. Text stays selectable and images are not re-compressed.

Can I merge password-protected PDFs?

Not directly. Encrypted files cannot be read without the password, so the tool reports which file is protected. Open it in a PDF reader, save or print it to a new PDF without the password, then merge that copy.

Is there a limit on files or pages?

There is no fixed limit. Because the work happens in your browser’s memory, very large files (hundreds of megabytes in total) may be slow or fail on phones and older computers.

Related tools

Image CompressorReduce the file size of JPG, PNG and WebP images in your browser without uploading them. Image ResizerResize an image to exact pixel dimensions or by percentage, keeping the aspect ratio. Image ConverterConvert images between JPG, PNG and WebP formats instantly in your browser. Image to PDFCombine JPG and PNG images into a single PDF file, in the order you choose. Split PDFExtract selected pages or page ranges from a PDF into a new file.