Merge PDF Files

Combine multiple PDF files into one document. Add files, drag to set the order, then merge and download. Free, no sign-up, works in your browser.

Drop PDF files here

or click to select multiple files

Files stay in your browser No sign-up required No limit on number of files

How to merge PDF files online

Merging PDFs is one of the most common document tasks — combining chapters, bundling application documents, joining invoices into a single file. This tool lets you add as many PDF files as you need, reorder them by dragging, and download a single combined PDF in seconds.

Step-by-step instructions

  1. Upload your PDF files. Click the upload area or drag multiple PDFs onto it at once. You can also add files one at a time using the "Add more" button.
  2. Reorder if needed. Drag the rows up or down to set the order you want. The first file in the list becomes the first pages of the merged document.
  3. Click Merge and Download. The tool combines all files and triggers a download. Open it to verify before sharing.

Common uses for merging PDFs

  • Job applications: Combine a CV, cover letter, and certificates into one file to send to employers.
  • Reports and presentations: Join individual chapters or sections into a single document for distribution.
  • Invoices and receipts: Bundle monthly invoices into one file for accounting or expense claims.
  • Legal documents: Combine contracts, annexures, and signature pages into a single coherent file.
  • Scanned documents: If you scanned a multi-page document one page at a time, merge the pages back into one file.

Does merging affect the quality?

No. Merging PDFs with this tool copies the pages exactly as they are — no re-rendering, no quality loss. Images, fonts, form fields, and links are preserved. The merged file is functionally identical to each original, just combined into one document.

How many files can I merge?

There is no limit set by this tool. You can merge 2 files or 50 files in one go. Keep in mind that very large files may take longer to process depending on your device. The tool runs in your browser, so processing speed depends on your computer's memory and the total size of the files.

What if my PDFs are password protected?

Password-protected PDFs cannot be merged. You will need to remove the password from each file first. Once unprotected, add them to the tool and merge as normal.

Privacy

All processing happens in your browser. Your files are never uploaded to a server — no one else can access them. This makes the tool safe for sensitive documents including contracts, financial records, and personal identification documents.

Frequently asked questions

Common questions about merging PDF files.

Can I merge more than two PDFs at once?

Yes. You can add as many PDF files as you need. There is no limit on the number of files. Add them all at once by selecting multiple files, or use the "Add more" button to add files one at a time.

Will the merged PDF keep bookmarks and links?

Internal links within each document are preserved. Bookmarks (document outlines) from the original files are not carried over to the merged document — this is a limitation of the pdf-lib library used by this tool.

Can I choose which pages to include from each file?

Not directly in this tool — all pages from each file are included. If you need to select specific pages, use the Split PDF tool first to extract the pages you want, then merge those extracts.

Is there a file size limit?

There is no hard limit, but very large files may be slow to process in the browser. If you are merging many large files, ensure your device has enough available memory.

Are my files uploaded to a server?

No. Everything runs in your browser using JavaScript. Your files never leave your device, which means they remain completely private.