What is PlotMarks?
PlotMarks is a chart-as-a-service API that turns raw data into embeddable charts with a single API call. Push your data to a URL, and PlotMarks returns a live or static iframe chart, or a PNG image — no frontend code required. Just paste the embed snippet or hit the render endpoint from wherever your data lives.
Key Features
- Live iframe charts – Charts that auto-refresh on a configurable interval, always showing current data
- Static iframe charts – Push updates on demand; the chart updates when you do
- PNG image rendering – Get a chart as an image for emails, PDFs, or Slack messages
- Bar and line chart types – Choose the right visualization for your data
- Per-chart configuration – Set titles, axis labels, and colors per chart
- API key authentication – Secure access to your charts and data endpoints
- Simple REST API – One endpoint to push data:
POST /api/charts/:id/data
How It Works
- Create a chart – Pick the chart type (bar or line) and output type (live, static, or image) from the dashboard
- Push your data – Send a
POST /api/charts/:id/data request with your JSON payload and API key
- Embed it – Paste the generated
<iframe> snippet into any webpage, doc, or email, or call the render endpoint directly
Use Cases
- Internal dashboards without a full BI tool
- Revenue or metrics charts embedded in Notion or Confluence
- Status charts in customer-facing portals
- Automated report images sent via email or Slack
Get Started
Create a free account to start building charts in minutes. No frontend setup needed — just an API key and a data payload.
Start for free
View docs
Support
For questions, feedback, or technical support, contact us at contact@amplitudepoint.com