What it does
CDKM converts documents, ebooks, images, audio, and video. Its interface accepts multiple local files or a file URL and provides options appropriate to the selected media type.
Choose local files or a remote URL, set the output format/options and start conversion; results appear on the same page for individual or ZIP download. Video settings include time range, dimensions, bitrate and frame rate; audio adds sample rate. Online conversion allows up to 10 files, with each document up to 40 mb and other files up to 200 mb, using the site's published units. Jobs stop after 10 minutes and limits can change with server load. The optional browser-local mode is off by default and supports most image/audio/video formats, but not documents. CDKM says uploaded inputs are deleted two hours after upload and outputs two hours after conversion; Delete all files offers earlier removal. Use is free without signup, including commercial work.
Strengths
- Provides detailed output controls for several media types.
Best for
- Mixed-format conversion with explicit media settings
Sources
- Online File Converter (Oct 26, 2026)
- FAQ - How to convert files on cdkm.com (Oct 26, 2026)
- Privacy policy - CDKM (Oct 26, 2026)