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CHM to PDF Converter

Turn a Windows CHM help file into a PDF you can read on any device or print.

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About CHM to PDF

CHM to PDF rescues documentation stuck in Windows Compiled HTML Help: manuals for older software and hardware, API references, e-books that were distributed as .chm. Macs, phones and tablets have no built-in CHM viewer, and even on Windows downloaded CHM files are often blocked. Upload the .chm and download a PDF.

A PDF keeps the content in one file you can bookmark, annotate and print, and it opens in any browser. It's also easier to share with colleagues or to keep in a document archive next to the rest of your manuals. Scanned manuals in DjVu format can join them via DjVu to PDF.

How to use CHM to PDF

  1. 1
    Upload the CHM file

    Choose or drop the .chm help file from your computer.

  2. 2
    Click CHM to PDF

    The help file is converted on our server in an isolated process.

  3. 3
    Download the PDF

    Open it on a Mac, phone or tablet, or print the pages you need.

Why use Cubfile for this

  • No CHM viewer needed

    Read old help files on macOS, iOS, Android and Linux.

  • Everything in one PDF

    The whole help file becomes a single document you can bookmark, annotate and print.

  • Easy to archive

    Keep manuals as PDFs alongside the rest of your documentation.

  • Private processing

    The .chm is encrypted on upload and removed from our servers after an hour.

FAQ

CHM to PDF: questions and answers

How do I open a CHM file on a Mac?
macOS has no built-in CHM viewer. Convert CHM to PDF here and open the result in Preview or any browser.
Why does a CHM file show blank pages on Windows?
Windows often blocks help files downloaded from the internet. You can unblock one under Properties, or convert it to PDF and skip the viewer entirely.
Is the CHM to PDF converter free, and how big can files be?
Yes: 2 tasks without an account and 2 a day with a free one, for files up to 50 MB. With VIP, tasks are unlimited and files can reach 1 GB.
Why use CHM to PDF instead of a CHM viewer?
A PDF opens on every device, from phones to e-readers, and is easy to print, annotate and archive. CHM viewers exist mainly for Windows. On a small screen, PDF to EPUB can turn the result into reflowing text.
Is my help file private when I convert CHM to PDF?
Yes. The help file travels over HTTPS, is converted on its own in an isolated process and is removed after an hour.
Share CHM to PDF with a friendIt runs in any browser, and they can try it without signing up.

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