CHM to PDF

Convert Windows CHM Help Files into Navigable PDFs Instantly.

CHM to PDF is the most complete solution for Mac users who need to open, read, and archive Windows Compiled HTML Help files. Built natively for macOS, it converts entire CHM libraries into navigable, print-ready PDFs — translating the original table of contents into interactive PDF bookmarks, preserving all hyperlinks, and handling a vast range of text encodings for accurate international document conversion. Everything runs locally on your Mac with no internet connection required.

Screenshots

Key Features

Smart Bookmark & TOC Preservation

Automatically translates the original CHM table of contents into interactive PDF outline bookmarks — preserving the entire document hierarchy for fast, organised navigation without manual re-entry.

Hyperlink Retention

Preserves all CHM internal cross-reference links and external topic hyperlinks as fully compatible PDF annotations — keeping the output document interactive and easy to navigate.

Vast Text Encoding Support

Supports a wide range of text encodings for accurate character mapping — essential for CHM files from non-English sources that may otherwise produce garbled or missing text in conversion.

Layout & Style Preservation

Accurately reconstructs paragraph formatting, fonts, images, tables, custom CSS styling, and code blocks from the original HTML source into clean, readable PDF output.

Custom Page Setup

Choose from predefined page presets (A4, Letter, Legal) or define fully custom page dimensions, margins, and orientation — with settings persisted between sessions.

Batch Conversion

Process entire directories of CHM files simultaneously — including recursive subfolder scanning. Drag and drop multiple files into the queue or use the Add File/Folder buttons for fast loading.

Folder Hierarchy Preservation

Maintain your original source folder and file structure at the destination — converted PDFs are automatically organised into corresponding subdirectories.

Standalone & Fully Private

No Microsoft Help compilers, virtual machines, or internet connection required. All conversion runs natively on your Mac — your technical documentation never leaves your device.

System Requirements

macOS

Version: macOS 10.6.6 or later

The Word on the Street

Catch up on the latest buzz from our users about CHM to PDF

★★★★★

“Best CHM to PDF Converter on OS X or Windows”

This CHM converter does its job and does it rapidly. It does not choke on large CHMs like Windows CHM to PDF converters do. It does not depend on other apps like some converters. It is truly a stand-alone app. It has two features that make it invaluable: 1. It converts the CHM bookmarks to PDF bookmarks! You don't have to re-enter bookmarks by hand. 2. It allows you to set the size of the pages in the PDF output. For some CHM's I prefer lega…

— Marianco

★★★★★

“Just the Job”

Just managed to convert a load of .chm files to pdf. A very smooth process and all the links, such as table of contents seem to be working perfectly. Excellent.

— earthwoman21

★★★★★

“It worked perfectly”

I only needed to convert one (large) CHM file, but it did so perfectly. I am especially thankful for the table of contents feature. Also of note, the app was smart enough to persist my change of "A4" to "letter" between runs.

— orderthruchaos

★★★★★

“CHM-toPDF”

links work well, it's great!

— andriusric

★★★★★

“great!!”

it works perfectly. thanks

— aro L.

★★★★★

“Best CHM to PDF Converter on OS X or Windows”

This CHM converter does its job and does it rapidly. It does not choke on large CHMs like Windows CHM to PDF converters do. It does not depend on other apps like some converters. It is truly a stand-alone app. It has two features that make it invaluable: 1. It converts the CHM bookmarks to PDF bookmarks! You don't have to re-enter bookmarks by hand. 2. It allows you to set the size of the pages in the PDF output. For some CHM's I prefer lega…

— Marianco

★★★★★

“Just the Job”

Just managed to convert a load of .chm files to pdf. A very smooth process and all the links, such as table of contents seem to be working perfectly. Excellent.

— earthwoman21

★★★★★

“It worked perfectly”

I only needed to convert one (large) CHM file, but it did so perfectly. I am especially thankful for the table of contents feature. Also of note, the app was smart enough to persist my change of "A4" to "letter" between runs.

— orderthruchaos

★★★★★

“CHM-toPDF”

links work well, it's great!

— andriusric

★★★★★

“great!!”

it works perfectly. thanks

— aro L.

★★★★★

“Best CHM to PDF Converter on OS X or Windows”

This CHM converter does its job and does it rapidly. It does not choke on large CHMs like Windows CHM to PDF converters do. It does not depend on other apps like some converters. It is truly a stand-alone app. It has two features that make it invaluable: 1. It converts the CHM bookmarks to PDF bookmarks! You don't have to re-enter bookmarks by hand. 2. It allows you to set the size of the pages in the PDF output. For some CHM's I prefer lega…

— Marianco

★★★★★

“Just the Job”

Just managed to convert a load of .chm files to pdf. A very smooth process and all the links, such as table of contents seem to be working perfectly. Excellent.

— earthwoman21

★★★★★

“It worked perfectly”

I only needed to convert one (large) CHM file, but it did so perfectly. I am especially thankful for the table of contents feature. Also of note, the app was smart enough to persist my change of "A4" to "letter" between runs.

— orderthruchaos

★★★★★

“CHM-toPDF”

links work well, it's great!

— andriusric

★★★★★

“great!!”

it works perfectly. thanks

— aro L.