Convert CHM to BMP
Convert CHM to BMP online: a help topic from the file laid out as a page, saved as an uncompressed BMP bitmap. Free, no sign-up.
Drop your CHM files here
Up to 50MB per file.
Conversion Settings
Files are encrypted and auto-deleted after conversion
How to Convert
- 101
Upload your CHM files
Drag and drop or select CHM files from your device. You can upload multiple files at once.
- 202
Configure Output
Choose any available BMP output options, then start the conversion.
- 303
Download BMP files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert CHM to BMP?
CHM is Microsoft Compiled HTML Help, the format used for help files shipped with Windows software. The image shows a topic page from the help file, with its headings, paragraphs, lists and tables laid out as a document page.
BMP stores every pixel uncompressed, so the image is exact and simple to read by any software that handles Windows bitmaps.
Frequently Asked Questions
How do I convert CHM to BMP?
Drop your CHM file above and press Convert. Our servers unpack the compiled help archive, take a topic page from it and render it. The result is saved as an uncompressed BMP bitmap, ready to download.
What does the BMP from a CHM help file contain?
The help file is unpacked and a topic page from it is rendered, showing its headings, paragraphs, lists and tables.
Can a CHM file from older Windows software still be turned into BMP?
Yes. The compiled help archive is unpacked on our servers, so help files from any era of Windows software can be read and rendered.
What happens when a CHM file fills several BMP pages?
Each page is rendered at 144 dpi and saved as its own BMP image, named page-1, page-2 and so on, and they download together as one ZIP. A single page downloads as one BMP file.
What kind of BMP does the CHM converter create?
A standard Windows bitmap with every pixel stored uncompressed, so the image is an exact copy of the rendered result.
Is my .chm file kept private?
Your file is uploaded over an encrypted connection, converted on our servers and deleted automatically within 24 hours. We never read, share or keep your files, and no account is needed.