About MAN Files
Unix Man Page
Man (manual) pages are the standard documentation format for Unix and Linux command-line tools, written in troff/groff markup. They follow a structured layout with NAME, SYNOPSIS, DESCRIPTION, and OPTIONS sections for consistent reference.
Family
Documents & Text
Extension
.man
MIME Type
text/troff
Can Use As
HOW MAN
CAME TO BE.
Unix man pages date to 1971, when Unix First Edition shipped at Bell Labs. Ken Thompson and Dennis Ritchie needed a way to document system calls, commands, and library functions, so they wrote short pages in `roff` (an early typesetting language) that could be formatted for either the teletype or a phototypesetter. The `man` command displayed these pages interactively in a pager. Fifty-plus years later every Unix-like OS still uses man pages as its primary command-line documentation.
A .man file (also called .1, .2, ..., .8 depending on the man section) is typically written in `troff` with either the `mdoc` or `man` macro package. The FreeBSD documentation, OpenBSD, Linux coreutils, and every Unix toolchain author ship man pages as their canonical docs. Running `man ls` on any Unix system renders one of these ancient files into your terminal — a toolchain older than the C language, TCP/IP, or the personal computer itself.
CURIOSITIES &
TRIVIA.
Unix man pages date to 1971 — older than C, TCP/IP, email, and most things you consider "the internet".
Man pages are organized into 8 numbered sections — 1 for commands, 2 for system calls, 3 for library functions, and so on.
The classic "RTFM" ("read the fine manual") joke specifically refers to reading Unix man pages.
Modern tools (tldr, cheat, bro pages) exist because man pages are notoriously terse — but those tools complement, not replace, man.
The `roff` typesetting language that powers man pages predates TeX by 7 years and is still maintained in 2026.
STRENGTHS &
LIMITATIONS.
Strengths
- Universal Unix-like OS documentation since 1971.
- Plain text with simple troff markup — tiny files.
- Section system cleanly separates commands from APIs from config files.
- Renders to terminal, PostScript, HTML, or PDF.
- Every Unix programmer knows the format.
Limitations
- Terse by design — bad for tutorials or beginner-friendly intros.
- Troff syntax is arcane and difficult for modern authors.
- No interactive examples or live-editable snippets.
- Mostly replaced by web docs, cheat sheets, and --help output for modern tools.
Typical Sizes & Weights
Single command man page
2-15 KB
Complex tool (e.g., bash man)
80-200 KB
Technical Specifications
- MIME type
- text/troff
- Extensions
- .man, .1, .2, .3, .4, .5, .6, .7, .8
- Markup
- troff / groff with mdoc or man macro package
- Renderer
- groff + less (terminal), groff → PostScript/PDF/HTML
- First shipped
- Unix First Edition (1971)
CONVERT FROM
MAN
Common Use Cases
Unix/Linux documentation, command-line tool references, system administration
Related Formats
Popular comparisons
MAN vs PDF
Differences, file size, and when to choose each format.
MAN vs DOCX
Differences, file size, and when to choose each format.
MAN vs ODT
Differences, file size, and when to choose each format.
MAN vs TXT
Differences, file size, and when to choose each format.
MAN vs MD
Differences, file size, and when to choose each format.
MAN vs HTML
Differences, file size, and when to choose each format.
Popular MAN conversions
The most-requested destinations when starting from MAN.
Frequently Asked Questions about MAN
Frequently Asked Questions
MAN (Unix Man Page) is a document format used to store paginated text, with optional formatting, tables, images, hyperlinks, headers and footers. It sits in the documents & text family and is typically associated with a specific office suite or publishing pipeline that defined the format and ships the canonical reader.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — open most MAN files with reasonable fidelity. If your installed software does not support MAN, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Upload the MAN to KaijuConverter and pick DOCX, PDF, ODT, RTF, HTML, Markdown, or plain text. Our pipeline runs LibreOffice headlessly plus pandoc for text formats — the same engines behind professional document pipelines. Styles, tables, images, and hyperlinks survive the conversion intact.
Yes, to a high degree. Standard fonts, headings, lists, tables, images, hyperlinks and page structure transfer cleanly. Custom fonts substitute to the closest match if not embedded; obscure layout features unique to MAN (frames, legacy macros) may flatten to static content in the target format.