CHM – Compiled HTML Help
CHM is Microsoft's compiled help format, also used for some ebooks.
More CHM conversionsCHM to PDB 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.
PDB – Palm eReader Database
PDB is an ebook format used by Palm OS readers such as eReader.
More PDB 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.