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CHM to MHTML converter

Convert CHM to MHTML online from any device with a free converter.

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We have already processed 5,836,540 files with total size of 9,544,751 Mbytes

About eBook converter

Convert CHM to MHTML files online with our free eBook converter. Convert CHM files fast, no matter if you're using Windows 10, a Mac, or an iPhone.

Popular eBook formats include EPUB, MOBI, and DJVU. EPUB is widely used for its flexibility and reflowable text, DJVU stores scanned documents, and MOBI is common on older Kindle devices. Top rated apps like Apple Books and Google Play Books allow reading on smartphones and tablets.

To change CHM to MHTML, simply upload your eBook file, choose MHTML as the output, and click Convert. Once done, your file will be ready to download instantly.

Check our video
CHM

Microsoft Compiled HTML

The CHM file format was developed by Microsoft for storing and displaying online help documentation, combining multiple HTML pages into a single compressed file. It is commonly opened using Microsoft's HTML Help Viewer, but third-party tools like 7-Zip or SumatraPDF can also extract or view CHM files. The format supports a hierarchical table of contents, full-text search, and embedded multimedia, making it a versatile solution for organizing and accessing help content efficiently.

MHTML

MIME Encapsulation of Aggregate HTML

MHTML (MIME HTML) is a web page archive format that combines HTML, images, scripts, and other resources into a single file for easy storage and sharing. It is supported by web browsers like Microsoft Edge and Internet Explorer, as well as tools such as email clients and web development software. The format uses MIME encoding to embed external resources directly into the file, enabling self-contained web pages with advanced features like CSS, JavaScript, and multimedia elements.

Add the conversion API to your app

  • Convert over 200 file formats — including PDF, Word, Excel, HTML, images, and many more
  • Load files from disk, URLs, FTP servers, or cloud storage (such as Amazon S3 or Azure)
  • Customize output settings — rotate and reorder pages, add comments, or apply watermarks
How it works

How to convert CHM to MHTML

Step 1
Click inside the file drop area to upload CHM file or drag & drop CHM file.
Step 2
Click on Convert button. Your CHM files will be uploaded and converted to MHTML result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the MHTML file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

You can also convert CHM into many other file formats. Please see the complete list below.

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