CHM to AZW - Convert ebook online
Conversion Results:
| # | Output File | Source File | Action |
|---|
How to convert CHM to AZW:
1. Click the "Choose Files" button to select multiple files on your computer or click the "URL" button to choose an online file from URL, Google Drive or Dropbox.
2. Set ebook conversion options include: base font size, embed fonts, page margin, metadata and whether to remove the first image which is useful if the input document has a cover image that is not identified as a cover. Choose a target ebook format. The target ebook format can be AZW3, EPUB, DOCX, FB2, HTML, OEB, LIT, LRF, MOBI, PDF, RTF, SNB, TCR, TXT, etc.
3. Click the "Convert Now!" button to start batch conversion. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to cloud storage services such as Google Drive or Dropbox.
CHM vs AZW:
| Name | CHM | AZW |
| Full name | Microsoft Compiled HTML Help | Kindle Format 8 |
| File extension | .chm | .azw,.azw3,.azw4 |
| MIME | application/vnd.ms-htmlhelp | application/vnd.-amazon.-mobi8-ebook |
| Developed by | Microsoft | Amazon.com |
| Type of format | Document file format | Ebook file format |
| Introduction | Microsoft Compiled HTML Help is a Microsoft proprietary online help format, consisting of a collection of HTML pages, an index and other navigation tools. The files are compressed and deployed in a binary format with the extension .CHM, for Compiled HTML. The format is often used for software documentation. | Kindle devices are designed to use Amazon's own e-book formats: AZW. In late 2011, the Kindle Fire introduced "Kindle Format 8" (KF8), also known as AZW3 file format. AZW3 supports a subset of HTML5 and CSS3 features, while acting as a container for a backwards-compatible MOBI content document. |
| Technical details | Help is delivered as a binary file with the .chm extension. It contains a set of HTML files, a hyperlinked table of contents, and an index file. The file format has been reverse-engineered and documentation of it is freely available. CHM files support the following features: data compression, built-in search engine, ability to merge multiple .chm help files, extended character support. | Kindles do not support the EPUB file format used by many other e-book readers. Similarly to EPUB, Amazon's file formats are intended for reflowable, richly formatted e-book content and support DRM restrictions, but unlike EPUB, they are proprietary formats. |
| Associated programs | Sumatra PDF, HTML Help Workshop | Calibre, KindleGen |
| Sample file | sample.chm | sample.azw |
| Wikipedia | CHM on Wikipedia | AZW on Wikipedia |