pdftoolz
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Merge PDF

Combine multiple PDFs into one document.

How it works

Step 1

Upload your file

Drag & drop or click to select your PDF from your device, Google Drive, or Dropbox.

Step 2

Process

Our servers instantly run Merge PDF on your file — no plugins or software required.

Step 3

Download

Your result is ready in seconds. Click download and you're done.

Frequently asked questions

How do I merge PDF files for free?
Upload your PDFs to pdftoolz, drag them into the order you want, and click 'Merge PDF'. The combined file downloads instantly. No account or payment required.
How many PDF files can I merge at once?
You can merge as many PDF files as needed in a single operation. Simply upload all the files and they will be combined in the order you arrange them.
Does merging PDFs reduce quality?
No. pdftoolz combines PDFs at the structural level — all text, images, fonts, and vector graphics are preserved at full original quality.
Can I merge PDFs on iPhone or Android?
Yes. The tool works in any mobile browser (Safari, Chrome). No app installation needed. Upload from your Files app, iCloud Drive, or Google Drive.
Will the merged PDF be too large?
The merged file size is approximately the sum of the input files. To reduce size after merging, run the result through the Compress PDF tool.
Can I reorder pages before merging?
Yes. After uploading, drag and drop the file thumbnails to set the order before clicking Merge PDF.