Markwhen

Markwhen creates cascading timelines from Markdown-like text, with date formats, links, images, and location support described in its repository.

github.com/mark-when/markwhen
Markwhen homepage screenshot

About Markwhen

Markwhen is an interactive text-to-timeline tool. It converts markdown-like text into a cascading timeline and supports American and European date styles, ISO8601 dates, images, links and locations. The GitHub repository is the view container, not the web editor; the editor at markwhen.com and the VS Code extension are built on top of it. The web editor is not open source, while other components, including the timeline and VS Code extension, are open source.

Key features

  • Converts markdown-like text into cascading timelines
  • Supports American, European and ISO8601 date styles
  • Renders images, links and locations
  • Includes timeline, calendar and resume views
  • Provides a view client library for custom views
  • Available as VS Code extension and self-hosted via Docker
Best for: People who want to turn plain text notes into timelines, and developers who want to build, customize or self-host timeline views.
Good for
  • Open source components include the timeline and VS Code extension
  • Multiple built-in views and a library for creating custom views
  • Flexible date formats and support for images, links and locations
Watch out for
  • The web editor itself is not open source
  • This repository is for the view container, not the editor; components have been split into other repositories
  • Local use may require hosting views locally because the default timeline view is hosted externally

Markwhen at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Markwhen FAQ

Is Markwhen open source?
The web editor is not open source. Other components, including the timeline and the VS Code extension, are open source.
Can I create my own views?
Yes. The project provides a view client library and a Vue view template for making custom views.
Can I run Markwhen locally?
Yes. The repository includes quick-start instructions for running the view container locally and a Docker build and run option on port 8080. You may also want to run your own local instance of the timeline or another view.
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