CHM – Compiled HTML Help
CHM is Microsoft's compiled help format, also used for some ebooks.
More CHM conversionsCHM to EPUB is coming soon
We list every conversion we plan to support so you can find it later, but we only switch one on once it really works. DRM-protected books cannot be converted. Comic formats (CBR/CBZ/CBC) are image-based.
EPUB – Electronic Publication
EPUB is the open standard ebook format. Text reflows to fit any screen, and it is supported by nearly every e-reader except older Kindles.
More EPUB conversionsHow this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.