CHM to PDF Converter
Select files for conversion or just drag and drop them to the upload area
How to convert CHM files to PDF online?
Step 1.
Upload CHM-file
Click "Choose File" button to select a chm file on your computer. CHM file size can be up to 50 Mb.
Step 2.
Convert CHM to PDF
Click "Convert" button to start conversion.
Step 3.
Download your PDF
When the conversion process is complete, you can download the PDF file.
Information about CHM and PDF file formats
| Name | CHM | |
| Full name | CHM - Microsoft Compiled HTML Help | PDF - Portable Document Format |
| File extension | .chm | |
| MIME type | 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 |
| Description | 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. |
| File conversion | CHM conversion | PDF conversion |
| 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. |
| Wiki | https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help | https://en.wikipedia.org/wiki/Portable_Document_Format |