PDF StudioFree

Merge PDFs without uploading them to anyone

Combining a few PDFs is the most ordinary job there is, and almost every site that does it wants your file on their server first. This one runs the merge on your own machine — the page loads, the work happens where you are, and the joined file saves back to you.

Open PDF StudioSee pricing

Free on every plan, including the free account. Prices in AUD.

How it works

  1. 1

    Open PDF Studio and choose Merge

    The Studio holds more than twenty-five tools; Merge is the one that joins files. Pick it from the list and the drop area opens.

  2. 2

    Add the files in the order you want them

    Drop in two or more PDFs. They join top to bottom in the order shown, so arrange them before you merge rather than fixing the order afterwards.

  3. 3

    Merge and download

    The combined PDF is built in the browser tab you are looking at and saves straight to your device. Nothing was sent anywhere, so there is nothing to delete afterwards.

What you get

  • Combine any number of PDFs into one file
  • Runs in your browser — the files never leave your device
  • No watermark on the result
  • No file-size cap or page limit held back for a paid tier
  • Reorder or rotate pages first with the Organiser and Rotate tools

Who it’s for

  • Anyone sending one document instead of four attachments
  • Businesses joining invoices, receipts or signed contracts into a single file
  • People merging documents that hold someone else's private details

Questions

Is merging free?
Yes — free, with no watermark and no size limit. You need an account so your work saves, and that is all. The separate PDF editor is the only part that charges, and it says so before you pay.
Do my files get uploaded?
No. The merge runs in your browser on your own device. There is no upload step because there is nowhere for the file to be uploaded to.
How many PDFs can I join at once?
As many as you like — the limit is your own device's memory rather than a number we set. Very large scans are the only case where it is worth doing in two passes.

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