About ORG Files
Org-mode
Org-mode is a markup language and organizational system created for GNU Emacs. It combines document authoring with task management, literate programming, and reproducible research in a plain text format with a powerful outlining structure.
Family
Documents & Text
Extension
.org
MIME Type
text/x-org
Can Use As
HOW ORG
CAME TO BE.
Org-mode was created by Carsten Dominik in 2003 as a plain-text outlining system for GNU Emacs. What started as a simple outline hierarchy has grown into one of the most powerful knowledge-management environments ever built: notes, task management, agenda views across multi-file projects, literate programming with embedded code blocks, spreadsheet-like tables with live formulas, citation management, export to HTML/PDF/LaTeX/ODT/Markdown, Pomodoro timers, habit tracking.
A .org file is plain UTF-8 text with a memorable syntax: asterisks for heading depth, `TODO` / `DONE` state keywords, timestamps, tags, properties, and `#+BEGIN_SRC` blocks for literate code. For serious Emacs users, .org is the format they write everything in — research notes, meeting agendas, blog posts, academic papers, shopping lists. The community around Org-mode is one of the most devoted in Emacs, with extensions and integrations that rival dedicated productivity apps.
CURIOSITIES &
TRIVIA.
Carsten Dominik wrote Org-mode in 2003 — 20 years later it remains one of Emacs's most popular extensions.
Org-mode pioneered "literate programming" for the modern era: embed code blocks, tangle them to separate files, re-weave results into the document.
Many academic papers in computer science and physics are written in Org-mode and exported to LaTeX — including peer-reviewed publications.
The entire Hugo-static-site generator can render Org-mode files directly alongside Markdown — blogs written in .org do exist.
Org-mode's date/time parsing handles relative times ("next Friday at 3pm"), recurring events, and habit-tracking — all in plain text.
STRENGTHS &
LIMITATIONS.
Strengths
- All-in-one productivity format — tasks, notes, agenda, papers.
- Plain UTF-8 text — diff-friendly, version-controllable.
- Literate programming with tangle/weave.
- Exports to HTML, PDF, LaTeX, ODT, Markdown, Beamer.
- Active open-source community with decades of extensions.
Limitations
- Emacs-centric — full power requires Emacs; other editors see syntax but miss features.
- Steep learning curve alongside Emacs itself.
- Limited mobile support (Orgzly on Android is the main option).
- Power comes from ecosystem, not format — not portable to Notion/Obsidian cleanly.
Typical Sizes & Weights
Daily notes file
2-50 KB
Research project aggregate
100 KB - 2 MB
Literate-programming document with output
500 KB - 10 MB
Technical Specifications
- MIME type
- text/org
- Extension
- .org
- Encoding
- UTF-8
- Native environment
- GNU Emacs Org-mode
- Creator
- Carsten Dominik (2003)
CONVERT FROM
ORG
Common Use Cases
Emacs users, literate programming, personal knowledge management
Related Formats
Popular comparisons
ORG vs PDF
Differences, file size, and when to choose each format.
ORG vs DOCX
Differences, file size, and when to choose each format.
ORG vs ODT
Differences, file size, and when to choose each format.
ORG vs TXT
Differences, file size, and when to choose each format.
ORG vs MD
Differences, file size, and when to choose each format.
ORG vs HTML
Differences, file size, and when to choose each format.
Popular ORG conversions
The most-requested destinations when starting from ORG.
Frequently Asked Questions about ORG
Frequently Asked Questions
ORG (Org-mode) 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 ORG files with reasonable fidelity. If your installed software does not support ORG, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Upload the ORG 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 ORG (frames, legacy macros) may flatten to static content in the target format.