Project Timeline is a browser based tool for creating project timelines and Gantt charts. It lets users plan tasks, milestones, dates and dependencies in a consolidated timeline, then switch to a traditional Gantt chart view. Changes to the schedule can be made through an AI assistant using natural language, with undo available for revisions. The tool also supports importing Jira epics through AI assistants such as Claude, ChatGPT or Grok, with links to the related tickets and the option to write planned dates back to Jira. Project features include dependency links with automatic date updates, critical path highlighting, team members and roles, resource allocation and utilisation views, and day rate based cost totals. Users can set a baseline to compare the original plan with actual progress, apply saved colour palettes, and account for weekends, public holidays and custom days off. Projects can be shared by email for collaborative planning. The interface is adapted for mobile devices, where users can edit task bars and dates. A typical workflow involves building a schedule, assigning people and resources, linking dependent tasks, and reviewing workload, costs or schedule slippage. Charts can be exported as SVG, PNG or PDF for use in presentations and reports. PNG exports are also copied to the clipboard. Project Timeline runs in a web browser, and its site lists paid plans starting at €3.99 per month.