Numarly

Merge PDF

Combine multiple PDF files into one, in the order you choose.

Click to select PDF files, or drag and drop them here

Select two or more PDFs to merge

What is it?

This tool combines two or more PDF files into a single PDF, entirely in your browser, in the order you arrange them.

Formula Explanation

Each selected PDF is read directly from your device, and every page from every file is copied — in order — into one new PDF document. Nothing is rendered or flattened, so text, links, and formatting in the original files are preserved.

Example Calculation

Merging a 2-page cover letter with a 5-page resume produces a single 7-page PDF, with the cover letter first if it's listed first.

How to Use

  1. Click the upload area or drag and drop two or more PDF files onto it.
  2. Reorder files with the ↑ / ↓ buttons — this sets the order pages appear in the final PDF.
  3. Click Merge & Download to save the combined file.

Benefits

  • Combines multiple PDFs into one without installing any software.
  • Processes everything locally in your browser — files are never uploaded anywhere.
  • Lets you reorder files before merging, so you control the final page order.

Use Cases

  • Combining a cover letter and resume into a single application PDF.
  • Merging scanned pages or reports from multiple sources into one document.
  • Assembling several invoices or receipts into one file to send or archive.

What Your Result Means

The downloaded file contains every page from every selected PDF, concatenated in the order shown in the list — nothing is removed, resized, or re-compressed.

Tips

  • Double-check the file order before merging — the ↑ / ↓ buttons are the only way to change it.
  • Very large PDFs (hundreds of pages or large embedded images) may take a few seconds to process.
  • If a file fails to merge, confirm it isn't password-protected or corrupted.

Common Mistakes

  • Forgetting to reorder files before merging — the output follows the exact order shown in the list.
  • Trying to merge a password-protected PDF, which this tool can't open.
  • Selecting only one file — merging needs at least two PDFs.

FAQs

Are my PDF files uploaded to a server?

No, all processing happens locally in your browser using JavaScript — your files never leave your device.

Is there a limit to how many PDFs I can merge?

There's no hard-coded limit, but a very large number of files or pages may slow down your browser since everything is processed in memory.

Can I merge password-protected PDFs?

No, encrypted or password-protected PDFs can't be read by this tool — remove the password first using your PDF reader, then merge.

Will the merged PDF preserve text and links?

Yes, pages are copied as-is, so selectable text, links, and formatting from the original files are preserved.

Files are read and merged locally in your browser and are never uploaded to a server.

Last updated: July 31, 2026