MS Windows HtmlHelp Data — file signature 49 54 53 46 03 00 00 00 60 00 00 00 at offset 0

For MS Windows HtmlHelp Data, hex signature is 49 54 53 46 03 00 00 00 60 00 00 00; offset is 0; extension is chm, verified against its source on 2026-09-22.

What the source says

49 54 53 46 03 00 00 00 60 00 00 00 | ITSF␃␀␀␀`␀␀␀ | 0 | chm | MS Windows HtmlHelp Data |

— en.wikipedia.org, retrieved 2026-09-22

Source

• en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-09-22. Due for re-check by 2027-09-22. This page as Markdown · OKF bundle · full dataset as JSON.