About Us

We are a professional software team specializing in the development of file converter software, apps, and websites for over 20 years. We have operated a large file converter website for more than 10 years. During this time, we developed many innovative ideas and experimental technologies that were not suitable for the old website, so we created a new one.

CDKM.com is our next-generation website built with many unrealistic ideas and experimental technologies. The most exciting thing is that we finally managed to put all kinds of file conversions and settings into one single webpage, regardless of the source or target file formats. Previously, users had to navigate to the corresponding category to set options and convert files. The second exciting thing is that we finally managed to put both the online converter and the offline converter into one single webpage. The offline converter serves as an excellent complement to the online converter.

Please note that CDKM.com has discontinued support for outdated browsers, such as Internet Explorer 6-8, Opera 12.1x, and Safari 5.1 and earlier. We recommend using our old website if you are not using a modern browser.

Features

CDKM.com is a unique website with exclusive designs and features. We upgrade CDKM.com on a weekly basis. Some exciting new features are coming soon!

  • Minimalist website design without any redundant items.
  • Mobile-first design to create better experiences on small screen of mobile phone.
  • All file uploads, conversions, and downloads can be completed on one single webpage regardless of file formats. No need to switch webpages.
  • Convert files online or offline directly in your web browser.
  • CDKM.com takes a number of steps to secure your files. Upload, convert, and delete. No files are left behind.
  • The website is built with many cutting-edge open-source projects such as LibreOffice, ImageMagick, and FFMpeg.
  • Converting files on CDKM.com is as simple as 1-2-3. Choose files, choose a output format and click the button to start conversion.
  • One-click to pack all output files or delete all output files to protect your privacy.
  • 100% free guaranteed for both personal and commercial use.

What's New

Latest website upgrades include:

  • Added "Convert files offline instead of online" option.
  • You can now choose up to 20 (increased from 10) files in batch conversion.
  • One less tap on mobile phone! The main function buttons are shown by default now, formerly these buttons required one tap on the dropdown button to show.
  • Added start/end position options for video and audio conversions.
  • Added support for more file formats such as JXL, VCF, and AC3.
  • Added "file history" in case the webpage is accidentally closed before file is downloaded.

Experimental

We are working on building an offline converter (the opposite of the online converter) that runs entirely within your web browser. Please note that the offline converter is an ongoing experimental project and it only works on modern web browsers that support new technologies such as ES Modules, WebAssembly, Shared Array Buffer, and Site Isolation. We strongly recommend using the latest web browsers and operating systems.

You should select the new "Convert files offline instead of online" option if:

  • Your file size is larger than 200MB.
  • Your file contains sensitive data and you prefer not to upload it to any online servers.
  • All allocated online servers are currently at maximum capacity.

Privacy

We do not provide REST API, account signup, or long-term file storage (includes downloading/uploading files to third-party file storage such as Google Drive, Dropbox, or OneDrive) due to potential GDPR (General Data Protection Regulation) concerns. For detailed information regarding our privacy policy, please visit https://cdkm.com/privacy.html.

Contact

If you have any questions about our website, please feel free to contact us at support@cdkm.com. You will typically receive a response within three business days regarding file conversion inquiries; other questions may be ignored or receive a response within three weeks.