Toolbox

Pdf TOOL

Merge PDF Files

Combine multiple PDF files into one PDF document in your browser.

Combine PDF documents

Select at least two PDFs. Maximum total selection: 50 MB. Files stay in your browser.

Drop your PDF files hereor click to browse · add multiple filesPDF only · Combined limit 50 MB · Processed locally
No files selected.

How to use this tool

  1. Choose at least two PDF files.
  2. Check the selected file count and order in the file picker.
  3. Select Merge PDFs and save the combined document.

About this tool

Select two or more PDF files to combine them in the order shown by your file picker. Files are processed locally in your browser using PDF-Lib; they are not uploaded to this site. Very large or complex PDFs may require significant memory.

Frequently asked questions

Are my PDFs uploaded?

No. The merging is performed in your browser. The PDF-Lib library is loaded from a public CDN when needed, but your selected PDF files are not sent to that CDN.

Can I change the order of files?

The merge follows the order returned by your browser's file picker. If you need a different order, select the files again in the intended order where your operating system supports it.

KEEP GOING

View all tools ↗

Explore other utilities that may help with your next task.

Split PDF PagesExtract selected pages or page ranges from a PDF into a new file.Rotate PDF PagesRotate every page in a PDF by 90, 180, or 270 degrees.JSON Formatter and ValidatorFormat, validate, and minify JSON with readable syntax errors.