◷ openchronology

Plugin library

Official and community plugins add moment icons, colors, shapes, stacks and custom metadata. Open a timeline’s Plugins menu to install a definition or publish your own script. Definitions travel with timeline exports.

Popularity counts public timelines with the plugin enabled. Age uses first publication; bundled official definitions are treated as older.

Plugin suites

A suite adds several plugins at once. Open a timeline’s Plugins menu and choose Add suite, or Create suite to package a timeline’s plugins.

Causal factor analysis

causal-factor-analysis · Version 1

Trace how factors lead to an outcome: stack contributing factors on a moment, and tell kinds of factor apart by shape and color.

Plugins: Moment stacks, Moment shapes, Moment colors

History education

history-education · Version 1

Teach a period with pictures and structure: moment icons, backgrounds for eras, summaries that fan out on hover, rich notes, and headings for chapters and parts.

Plugins: Moment icons, Duration backgrounds, Expand on hover, Rich text notes, Headings

Plugins?Plugins add icons, colours, images, notes and more to a timeline. Add them from its Plugins button.

Dating context

dating-context · Version 1

Explain the precision and coordinate convention of a moment. An exact stored coordinate can still represent an approximate age or a calendar-day marker.

Duration backgrounds

duration-backgrounds · Version 1

Show an image behind the timeline where a duration lies, centered between its visible start and end and filling the timeline. Smaller durations show above larger ones, and edges blend into each other.

Expand on hover

expand-on-hover · Version 1

Hover or focus a summary of two to five moments to fan out its members radially for individual inspection. Larger summaries stay collapsed.

Focus on hover

focus-on-hover · Version 2

Expand moments into a card with their title, the first lines of notes, and any icon image. Also works on stack entries.

Geological ages

geological-ages · Version 1

Record an approximate geological age in years before reference year 2000 CE. This annotation does not change the exact coordinate or claim a more precise scientific estimate.

Headings

moment-headings · Version 1

Let a moment act as a heading or marker: only its title shows, sized as a heading from level 1 to 6, and the title is what you click. Choose its font (Times New Roman by default). Headings still group into summaries with other moments.

Historical dates

historical-dates · Version 1

Retain an original historical date and its calendar separately from the timeline coordinate and display calendar, such as a Julian date on a Gregorian timeline.

Log severity colors

log-severity-colors · Version 1

Color imported log entries by severity, from any log format: debug gray, notice blue, warning yellow, errors red and anything more severe dark red; info keeps the default. A color chosen for an entry still wins, and nothing is saved: the colors are worked out as the timeline is drawn.

Moment colors

moment-colors · Version 2

Choose muted semantic swatches or a custom color for moments and stack entries while preserving their white borders.

Moment icons

moment-icons · Version 2

Show a circular image on each moment, enlarge it on hover, and edit its image URL in the details panel.

Moment shapes

moment-shapes · Version 2

Choose geometric and flowchart symbols for moments and stack entries: decisions, processes, documents and more.

Moment stacks

moment-stacks · Version 2

Keep ordered entries inside a moment, sharing its time and the timeline’s other metadata plugins. Stacks cannot be nested.