supuserPDF STUDIO
ORGANIZE PDF

Merge PDF

Combine multiple PDF files into one neatly ordered document.

Free to use No sign-up Browser-based

Start with your files

Local document processing

Drop your PDF files here

or browse files on your device

Choose filesPDF files only · Maximum recommended 50 MB per file · Large files may use significant memory
Choose a file to get started.

Files are processed in your browser, not intentionally uploaded to SupUser. The app loads JavaScript libraries from external CDNs. Check every exported file before sharing.

ABOUT THIS TOOL

What is Merge PDF?

Combining related documents can make a handoff easier: put a cover sheet first, supporting records next, and appendices last. This tool joins your selected PDF files in the order shown in the file list. It preserves each source page as a PDF page rather than converting pages to screenshots.

How to use Merge PDF

  1. Select at least two PDF files from your device.
  2. Check the file list; drag files into the order you want.
  3. Choose Merge PDFs and save the resulting document.

When is this useful?

For example, merge an application form, supporting letter, and two receipts into one file with the application form first.

Tips for better results

  • If the order matters, name the originals clearly before selecting them or reorder them in the tool.
  • Check that the combined file contains every page before deleting your originals.
  • Bookmarks, forms, and advanced PDF features may not survive every merge; inspect the output if these features matter.

Important: Keep your original file and review the downloaded output. Not every interactive PDF form, digital signature, annotation, or specialized PDF object is guaranteed to be preserved.

COMMON QUESTIONS

Frequently asked questions

Does merging reduce image quality?

Pages are copied as PDF pages rather than being rendered to images. Some specialized PDF structures may still change.

Are my documents uploaded?

The PDF tool runs in your browser. The selected document contents are not intentionally sent to the SupUser server.

Can I merge password-protected files?

Encrypted PDFs that the browser library cannot open must be unlocked with appropriate authorization first.

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