Merge PDF files for free

Combine multiple PDF files into a single, organized document in seconds. Free, online, and no account or software installation required.

Combine two or more PDFs into a single document in the order you choose. Everything happens on our servers and the merged file is ready to download in seconds.

What this tool can do

Combine PDF files into one document in the order you choose. Merging joins pages; it does not automatically make the result smaller. Review the page order, remove anything unnecessary, then compress the combined file if you need to meet an upload limit.

What merging actually does

Merging copies the pages of each PDF, in the order you list them, into one new document. The pages themselves are not re-rendered or re-compressed: text stays selectable and images keep their original resolution, so the merged file looks exactly like the originals placed back to back.

Because nothing is converted, the merged file is roughly the sum of the input sizes. If the result is too large to email, run it through Compress PDF afterwards rather than before, so you only compress once.

Good uses for it

Typical jobs are combining a scanned passport, a bank statement and an application form into the single file an online portal asks for; joining the chapters of a report written by different people; or assembling invoices for a month into one document for your accountant.

Limits

You can combine up to 50 files per job, each up to 100 MB and up to 300 MB in total. Password-protected PDFs have to be unlocked first, because an encrypted file cannot be read without its password.

How to use this tool

  1. Upload the PDF files you want to combine.
  2. Drag to reorder them if needed.
  3. Click "Merge PDF" and download the combined file.

Frequently asked questions

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

You can merge as many files as you like in one job, as long as the combined size stays under our upload limit.

Will the page order be preserved?

Yes — pages are merged in the exact order the files are listed before you click Merge.

Do bookmarks and links survive a merge?

Everything drawn on the pages is carried over, and links to websites keep working. Bookmarks (the outline panel) are not combined into the new file, and links that jumped to another page inside one of the original files may no longer point to the right place.

Tips

  • Name files with a number prefix (01-cover.pdf, 02-letter.pdf) so they upload in the right order.
  • Need only some pages of a file? Use Extract Pages on it first, then merge the result.

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