CHM to PDF - Convert ebook online
Conversion Results:
| # | Output File | Source File | Action |
|---|
How to convert CHM to PDF:
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 PDF:
| Name | CHM | |
| Full name | Microsoft Compiled HTML Help | Portable Document Format |
| File extension | .chm | |
| MIME | application/vnd.ms-htmlhelp | application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdf |
| Developed by | Microsoft | Adobe Systems |
| Type of format | Document file format | Document 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. | The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. |
| 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. | The PDF combines three technologies: A subset of the PostScript page description programming language, for generating the layout and graphics. A font-embedding/replacement system to allow fonts to travel with the documents. A structured storage system to bundle these elements and any associated content into a single file, with data compression where appropriate. |
| Associated programs | Sumatra PDF, HTML Help Workshop | Adobe Acrobat, Adobe InDesign, Adobe FrameMaker, Adobe Illustrator, Adobe Photoshop, Google Docs, LibreOffice, Microsoft Office, Foxit Reader, Ghostscript. |
| Sample file | sample.chm | sample.pdf |
| Wikipedia | CHM on Wikipedia | PDF on Wikipedia |