100% client-side PDF merging

Merge PDF files fast, clean, and private.

Combine multiple PDF files into one document. Reorder files, preview the first page, rename the output, and download instantly. Your PDFs are processed inside your browser — no server upload.

Start merging

Upload & preview

0 MB

Drop PDF files here

Or select files from your device. Safety limits: 10 PDFs, 500 total pages, 60MB per file, 120MB total.

Preview area
Select a file from the queue to preview its first page.

How to merge PDF files online

This free Merge PDF tool combines documents directly in your browser. It is ideal for invoices, reports, scanned documents, contracts, school notes, application files, and client paperwork.

Steps

  1. Select two or more PDF files, or drag them into the upload area.
  2. Check the preview and drag files in the left panel to set the final order.
  3. Enter a clean filename without special characters.
  4. Click Merge PDFs and download the combined file.

Privacy and browser safety

The PDF merge happens locally using JavaScript. Your files are not uploaded to Simple PDF Tools. For smooth performance, this page uses practical limits: 10 PDFs, 500 total pages, 60MB per file, and 120MB total per batch.

Frequently asked questions

Is it free? Yes, this Merge PDF tool is free to use.

Are files uploaded? No, files are processed inside your browser.

Does it work on mobile? Yes, it is designed for Android, iPhone, tablets, Windows, macOS, Linux, Chrome, Edge, Safari, and Firefox.

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