CHM to PDF Converter
Turn a Windows Help (CHM) file into a PDF you can open on any device.
Upload a CHM File to Convert to PDF
Drag & drop your file here, or click to browse
Choose CHM FileHow to Convert CHM to PDF in 3 Easy Steps
Read old Windows help files and manuals on any computer or phone.
Upload Your CHM File
Drag and drop your .chm file into the box above, or click Choose CHM File. Files up to 30 MB are supported.
Pick a Page Size
Choose A4, US Letter or another size, in portrait or landscape.
Convert and Download
Click Convert to PDF. All help topics are placed in table-of-contents order. Then click Download.
Why Convert CHM to PDF
CHM files only open on Windows — and often show a blank page. PDF opens everywhere.
Table-of-Contents Order
Topics are placed in the same order as the CHM's contents, each starting on a new page.
Images and Styles Kept
Pictures, tables and the help file's own styles are used in the PDF.
Open Anywhere
Read the manual on Mac, Linux, iPhone, Android or Chromebook — no Windows needed.
Choose Page Size
A4, US Letter, Legal, A3 or A5, in portrait or landscape.
Private and Secure
Encrypted upload, isolated processing and automatic deletion within 1 hour.
Free, No Watermark
No sign-up and no Toolszu logo in your PDF.
Good to Know
- CHM shows a blank page on Windows? That's a Windows security block, not a broken file. Converting to PDF is the easiest fix.
- Scripts are switched off for safety, so interactive parts of a help file (like search boxes) won't appear in the PDF.
- Large manual? Shrink the PDF with Compress PDF.
Frequently Asked Questions
Quick answers about converting CHM help files to PDF.
CHM (Compiled HTML Help) is the format of Windows help files and many software manuals and eBooks. It's a package of web pages, images and a table of contents.
Upload your .chm file, choose a page size and click Convert to PDF. When it's done, click Download.
Windows blocks CHM files downloaded from the internet. You can unblock the file in its Properties, or simply convert it to PDF here.
Mac, iPhone and Android can't open CHM files without extra apps. Convert it to PDF here and open it in any PDF reader.
Yes. Topics are placed in the order of the CHM's table of contents, each starting on a new page.
Yes. Choose A4, US Letter, Legal, A3 or A5, and portrait or landscape, before you click Convert.
You can upload files up to 30 MB and 500 pages, and convert up to 20 files per day for free. The daily limit resets every day.
Yes. Your file is sent over an encrypted connection, converted in an isolated sandbox with no internet access, never shared with anyone and deleted automatically within 1 hour. You can also delete it right away with the Delete now button.
Yes, it's 100% free. There's no sign-up, no premium version and no watermark or Toolszu logo added to your file.
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Ready to Convert Your CHM File?
Turn Windows help files into PDF in seconds — free, with no sign-up.
Convert CHM to PDF