Merge PDF Files into One Document
Combine multiple PDF files into a single document, in the order you choose.
How to Merge PDF Files in 3 Steps
- Upload your PDF files. Click "Choose files" or drag and drop multiple PDF files into the upload area. You can add as many files as you need — there is no limit on the number of documents.
- Arrange the order. Your files will appear in the order they were uploaded. Reorder them as needed before merging to ensure the final document flows correctly.
- Download your merged PDF. Click "Merge PDF" and your combined document will be ready to download in seconds. The file is automatically deleted from our servers after you download it.
Why Use PDFTools to Merge PDF?
- No file limit — Combine as many PDF files as you need into a single document without any restrictions.
- Original quality preserved — Merging PDFs does not affect the quality of text, images, or formatting in your documents.
- Completely free — No subscription, no watermarks, no account required. Merge PDFs for free, every time.
- Files deleted automatically — All uploaded files are permanently deleted from our servers within one hour of processing.
Frequently Asked Questions
How many PDF files can I merge at once?
There is no strict limit on the number of PDF files you can merge using PDFTools. You can combine as many documents as you need in a single operation. Very large numbers of files may take slightly longer to process.
Will merging PDFs reduce the quality?
No. PDFTools merges PDF files at the document structure level, which means the text, images, fonts, and formatting in each file are preserved exactly as they were in the originals. There is no re-rendering or quality loss.
Can I merge password-protected PDFs?
Password-protected PDFs cannot be merged directly. You will need to remove the password first using our Unlock PDF tool, then merge the unlocked files.