Preceden
Preceden is a web-based tool for creating visual timelines about projects, history, legal cases, research, and writing.
What Preceden is
Preceden is a web-based tool for creating visual timelines about projects, history, legal cases, research, and writing. Users can build timelines manually or generate them with its AI tool, then add layers, connected events, notes, icons, legends, themes, and approximate dates. Drag-and-drop editing and zoom help organize and view events. For planning, it also supports Gantt charts, project roadmaps, dependencies, milestones, percent-complete tracking, bulk editing, and templates. Spreadsheet data can be imported from CSV or XLSX files. Timelines can be shared by link, HTML embed, or presentation mode, with private, password-protected, and secret-URL visibility options. Exports include PDF, image, PowerPoint, and spreadsheet formats. The free plan allows 10 events per timeline. The AI timeline generator is free without an account, but editing its output requires one. Phone use supports basic editing; full visualization needs a tablet or larger screen.
Good
- Supports timelines, Gantt charts, roadmaps, and legal chronologies.
- Imports CSV and XLSX spreadsheets.
- Offers private, password-protected, and secret-link visibility settings.
- Free plan allows 10 events per timeline.
Watch out
- Real-time collaboration is not supported.
- Phone interface is limited to basic editing.
- Full visualization requires a tablet or larger screen.
- AI may be inaccurate on obscure or recent topics.
Who it suits
Preceden suits people organizing events into timelines, legal chronologies, comparative timelines, or project roadmaps. It can also fit project planners who need Gantt charts and spreadsheet import, though simultaneous real-time collaboration is not supported.
Verdict
Preceden offers timeline creation, planning features, and multiple ways to share or export work. The free tier has a 10-event limit per timeline, and teams needing live collaboration should note that it is not supported.
Plans and prices
From Preceden's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Unlimited timelines · 10 events per timeline · PDF, PPTX, and other exports · no spreadsheet import, collaboration, custom logo, or custom domain · free forever |
| Basic | $10 a month | Unlimited events · billed annually |
| Pro | $16 a month | Unlimited events · Up to 100 collaborators per timeline · billed annually |
| Basic (annual billing) | $10 a month | Unlimited timelines and events · exports · removes Preceden branding · spreadsheet import · no collaboration, custom logo, or custom domain · billed annually |
| Pro (annual billing) | $16 a month | Unlimited timelines and events · exports · removes Preceden branding · spreadsheet import · collaboration · custom logo · custom domain · billed annually |
| Basic (monthly billing) | $25 a month | Unlimited timelines and events · exports · removes Preceden branding · spreadsheet import · no collaboration, custom logo, or custom domain · billed monthly |
| Pro (monthly billing) | $40 a month | Unlimited timelines and events · exports · removes Preceden branding · spreadsheet import · collaboration · custom logo · custom domain · billed monthly |
The facts
Each one read from Preceden's own pages, with the date it was checked.
What it does
- AI availability
- Timeline Maker AI is free to use without a Preceden account, while editing its generated timeline requires an account.checked 8 Oct 2026
- AI limitations
- Preceden says AI generation works best for well-known historical or fictional topics, may be inaccurate on obscure or recent topics, and cannot use a URL as its topic input.checked 8 Oct 2026
- Diagram types
- timelines,Gantt charts,project roadmaps,legal chronologies,comparative timelineschecked 22 Sep 2026
- Founder and origin
- Preceden says founder Matt Mazur built it after experiencing the difficulty of creating project timelines while serving as an Air Force project manager.checked 8 Oct 2026
- Import
- Spreadsheet import supports XLSX and CSV files.checked 8 Oct 2026
- Import/export formats
- CSV,XLSX,PDF,PNG,PPTXchecked 22 Sep 2026
- Privacy controls
- Timeline visibility can be controlled with private, password-protected, or secret URL access settings.checked 8 Oct 2026
- Purpose
- Preceden is a web-based timeline maker for creating visual timelines about projects, history, legal cases, research, and writing.checked 8 Oct 2026
- Real-time collaboration
- Nochecked 22 Sep 2026
- Refunds
- The pricing page says customers can email within 15 days of a payment for a full refund.checked 8 Oct 2026
- Sharing and exports
- Timelines can be shared by link, HTML embed, or presentation mode and exported as PDF, image, PowerPoint, spreadsheet, and more.checked 8 Oct 2026
- Support
- Preceden’s Help Center offers support articles and says users can email the company for help.checked 8 Oct 2026
- Timeline creation
- Users can generate timelines with its AI tool or create them manually.checked 8 Oct 2026
- Visualization
- Features include layers, connected events, drag and drop, zoom, themes, legends, icons, notes, and approximate dates.checked 8 Oct 2026
The company
- Company location
- The site footer identifies Preceden LLC as being in Cary, NC.checked 8 Oct 2026
- Founded
- 2010checked 28 Sep 2026
- Headquarters
- Cary, North Carolina, United Stateschecked 28 Sep 2026
Where it runs
- Device support
- Preceden is used through its website and has no downloadable desktop version; its phone interface supports basic content editing, while the full visualization requires a tablet or larger screen.checked 8 Oct 2026
Money
- Free plan
- Yeschecked 22 Sep 2026
- Project planning
- Advanced features include dependencies, percent complete, milestones, bulk editing, templates, and Gantt charts.checked 8 Oct 2026
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