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Online Tools

You can find various free online tools offered by ZDK Engineering here to facilitate your daily tasks and engineering work. Your support is important for the continued development of these tools and the addition of new ones.

All processing happens in your browser. Your files are never uploaded to any server and never leave your device.

PDF Tools

PDF Merge

Easily merge multiple PDF files into a single PDF file.

You can select multiple files by holding down the Ctrl (or Cmd) key.

PDF Split

Split a PDF file into a specific number of parts or by the desired number of pages per part.

Image to PDF

Combine JPG, PNG, WEBP, GIF and BMP images into a single PDF file.

You can select multiple images. They will be added to the PDF in selection order.

Support the Project!

If you find these free tools useful and would like to contribute to the site's development and the addition of new tools, you can support by buying a small coffee. Your support is very valuable to me!

Buy Me a Coffee

Engineering Applications

Various engineering calculation and analysis tools (e.g., unit converter, simple static calculations, etc.) will be available in this area soon.

Other Practical Tools

Practical calculation and auxiliary tools to facilitate your daily life on various topics will be presented in this section.