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Free PDF Merge Tool

Combine multiple PDF files into one document instantly. Simple, fast, and completely free.

Click to Upload or Drag & Drop

Select multiple PDF files to merge

• Up to 10 files • 16MB total upload request • Temporary server files

Lightning Fast

Merge multiple PDFs in seconds with our optimized processing

Temporary Processing

Files are server processed and scheduled for deletion after 60 minutes

No Account Required

Start directly; request limits and rate controls still apply

How to Merge PDF Files Online Free

  1. 1
    Upload Your PDFs: Add 2–10 PDF files. The complete multipart request must stay within 16MB, so the combined file size needs to be below that limit. Encrypted, damaged, or unusual PDFs may fail.
  2. 2
    Arrange the Order: Drag and drop the file cards to reorder them exactly how you want. The final merged PDF will follow this sequence from top to bottom. You can also remove individual files or add more at any time before merging.
  3. 3
    Merge, Download, and Check: Create the output, download it, then inspect the first, middle, and last pages. Temporary uploads and results are scheduled for deletion after 60 minutes by an hourly cleanup task.

Key Features

  • Drag-and-Drop Reordering: Easily arrange your PDF files in any order before merging by dragging them into position.
  • Bounded File Set: Combine 2–10 PDFs per request, subject to the 16MB total request limit and rate controls.
  • Temporary Server Processing: Files are processed on the server and scheduled for deletion after 60 minutes. Do not upload sensitive documents.
  • Page-Level Merge: Pages are copied without intentional image recompression, but interactive forms, signatures, fonts, and unusual PDF structures still need inspection.
  • No Software Installation: Use the web interface on a current desktop or mobile browser.

Frequently Asked Questions

How many PDF files can I merge at once?

You can merge 2–10 PDF files in one operation. The entire upload request is limited to 16MB, so the combined file size—not each individual file—must fit below that boundary.

Will merging PDFs reduce the quality of my documents?

Pages are copied without intentional image recompression, but PDF features such as interactive forms, digital signatures, embedded files, unusual fonts, or damaged structures may not survive unchanged. Always inspect the output.

Is it safe to upload confidential documents for merging?

Do not upload confidential or regulated documents. Files are processed on the server and temporary uploads/results are scheduled for deletion after 60 minutes by an hourly cleanup task.

Can I change the order of pages after uploading?

Absolutely. After uploading your PDFs, you can drag and drop the file cards to rearrange them in any order you like. The final merged document will follow the exact sequence you set. You can also remove individual files and add new ones before starting the merge.

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Frequently asked questions

How many PDF files can I merge at once?

You can merge 2–10 PDF files. The complete multipart upload request must remain below 16MB, so the combined files—not each file separately—must fit the limit.

Is the merged PDF unchanged?

Pages are copied without intentional image recompression, but forms, signatures, embedded files, fonts, and unusual structures may change. Inspect the downloaded output.

How are files handled?

Files are processed on the server and temporary uploads/results are scheduled for deletion after 60 minutes. Do not upload sensitive documents.