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GANTT CHART MAKER / DEPENDENCIES · MILESTONES · HOLIDAYS

Gantt Chart Maker

One task per line; change a duration and everything after it moves.

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Write PlantUML on the left or pick a template; the diagram appears here.

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Finish your materials, then connect the rest of your work

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How to use it

  1. Pick a template: production schedule, trade fair or product launch.
  2. Change the start date, task names and durations; use starts at [task]'s end for dependencies.
  3. Download SVG or PNG for customers and colleagues; when a date slips, edit one line and the whole chart reflows.

Syntax cheat sheet

SyntaxMeaning
Project starts 2026-11-02Project start date
[Samples] lasts 10 daysA task and its duration
[Samples] starts at [Research]'s endStarts when another task ends (dependency)
[Launch] happens at [Samples]'s endA milestone (diamond)
saturday are closedSkip weekends
2026-10-01 to 2026-10-07 are closedSkip holidays
[Samples] is colored in LightBlueColour a task
[Samples] is 60% completedShow progress
language zhChinese dates and weekdays

Frequently asked questions

Why not draw the Gantt chart in Excel?

In Excel, changing one duration means moving every later task by hand; here you state "starts when X ends", so later tasks shift automatically and weekends and holidays are skipped.

How do I skip weekends and holidays?

Write saturday are closed and sunday are closed for weekends, and 2026-10-01 to 2026-10-07 are closed for holidays. Durations then count working days.

Can it show progress and milestones?

Yes. [Task] is 60% completed shows progress, [Ships] happens at [Packing]'s end draws a diamond milestone, and [Task] is colored in LightBlue colours a task.

Is my plan stored or published?

No. For the preview the source is rendered on this site's server in sandbox mode and discarded at once; a share link keeps the source inside the link itself.

Gantt chart maker practical guide and common questions

What does a Gantt chart maker do?

PlantUML Gantt syntax covers durations, dependencies (starts at …'s end), milestones, colours, progress and closed days; change one duration and later tasks move, with durations counted in working days.

Who is this for, and when is it useful?

Order follow-up, project and operations staff scheduling production, trade fair preparation or product launches who need a clear timeline for a customer or manager.

How do I use this Gantt chart maker?

Pick the production, trade fair or launch template, change the start date, tasks and durations, state dependencies, let weekends and holidays be skipped and export the image.

How should I interpret the results?

Dates are worked out from your start date and are not linked to a calendar or reminders; for long plans, printscale weekly shows weeks instead of days.

Where is the work performed, and which services receive data?

For the preview the Gantt source goes to this site's server and is rendered without being stored or logged; a share link keeps the source inside the link itself.