Merge PDF Tool — Combine PDFs Online

Merge PDF — Combine & Download

Combine multiple PDF files into a single document quickly, securely and with the ability to reorder files before merging.

Drag & drop your PDF files here or click "Add PDFs" to select files. You can reorder files by dragging their preview tiles before merging.
Supported: PDF files only. Files stay in your browser — never uploaded to a server.

About this tool

This Merge PDF Tool is a lightweight, browser-based utility that lets you combine multiple PDF files into one document without uploading your files to a remote server. All processing happens locally in your browser for privacy and speed. The tool is ideal for creating consolidated reports, presentations, invoices, and multi-chapter documents.

How it works — step by step

  1. Select or drag & drop the PDF files you want to combine. Only PDF files are accepted.
  2. Preview tiles appear for each selected file. You can reorder these tiles by dragging them into the desired sequence.
  3. Click the "Merge PDF" button to join the selected documents into a single PDF file. The merged PDF is created locally in your browser.
  4. Click "Download Merged PDF" to save the combined file to your device.
Privacy & Security: Files are processed in your browser using a client-side library. Nothing is uploaded to remote servers — ideal for sensitive documents.

Benefits

  • No registration required — use instantly.
  • Fast: merging happens locally for immediate results.
  • Secure: files remain on your device.
  • Responsive UI: works on desktop and modern mobile browsers.

Frequently Asked Questions (FAQ)

Is it safe to use this tool for confidential PDFs?

Yes. This tool uses client-side processing (in your browser), so files are not transmitted to external servers. For added caution, use it on a trusted device and browser.

Do I need to create an account?

No account is required. The tool is available for immediate use — just select your PDFs and merge.

Can I reorder pages within the PDFs before merging?

Currently you can reorder the selected files; page-level reordering is not supported in this basic version. For page-level editing, consider a dedicated PDF editor.

What about file size limits?

Limits depend on your device and browser memory. For large PDFs or many files, merging may be slower or cause memory constraints. Try fewer files at a time for better performance.

Which browsers are supported?

Modern browsers that support the File API and WebAssembly (Chrome, Edge, Firefox, Safari) are supported. Please update your browser for the best experience.