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Merge and split PDFs

Combine several files into one or split a PDF into parts – in seconds.

Try free for 7 days Buy from €134.10

All Pro features free for 7 days – then buy once, no subscription.

Combine several PDFs into one file

Quote, attachments and data sheet in a single document? With CtdPDF you merge any number of PDF files in the order you want – locally on your computer and without the size limits of an online service.

Step by step

  1. Click Merge (top right in the menu bar).
  2. Add files and sort them by drag & drop.
  3. Merge – done.

The other way round: split a PDF

  • Split by fixed page counts or page ranges.
  • Save individual pages as a new file.
  • Insert pages from another PDF, delete, rotate and reorder them right in the thumbnail view.

Privacy included

Uploading confidential documents to an online tool is rarely a good idea. CtdPDF works entirely locally.

Frequently asked questions

Is CtdPDF a subscription?
No. You buy a licence once and use CtdPDF permanently. There is no term and no automatic renewal.
How much does CtdPDF cost?
CtdPDF Standard 2026 costs a one-time €149, CtdPDF Pro 2026 a one-time €199 – each incl. 19% VAT per device. From 2 licences volume pricing applies (Standard: €139, €129, €119; Pro: €185, €172, €159 per licence).
Can I try CtdPDF before buying?
Yes. Download and install CtdPDF for free. Without an activated licence you can open and read PDFs; activate a licence to edit. [Trial period to be defined]
On how many devices can I use a licence?
One licence covers one device. When you get a new PC, release the old device in your account (up to 3 releases in 30 days) and activate the licence on the new one.
What are the system requirements?
Windows 10 or Windows 11 (64-bit) with .NET Framework 4.8 (included in current Windows versions). An internet connection is required for activation and the licence check about every 7 days.

See all questions →

Try CtdPDF now

Buy once, use forever – including every Standard feature.

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Free sign-up is all it takes · no payment details · one-time price incl. VAT · Windows 10 & 11