CHM File — Open & Convert .chm Online
What Is a .chm File?
CHM (.chm) is a document file format. Compiled HTML Help Created by Microsoft, this format is essential for writers, students, and office workers.
How to Open .chm Files
Upload your .chm file to OpenAnyFile and instantly read and annotate it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About CHM Files
Popular CHM Conversions
Frequently Asked Questions
What is a .chm file?
A .chm file is a document format called CHM. Compiled HTML Help
How do I open a .chm file without installing software?
Upload your .chm file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .chm files?
.chm files are typically created by Microsoft.
Can I convert .chm to another format?
Yes. OpenAnyFile converts .chm to PDF, HTML.
Is it safe to open .chm files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .chm on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.