About The Map Plotter

The Map Plotter visualizes latitude and longitude points on a lightweight canvas map. It is useful for quick coordinate checks, demos, QA review, and spotting obvious latitude/longitude mistakes.

How to Use the Map Plotter Online

1. Click the map to add points interactively.
2. Use advanced mode to paste coordinate lines as lat,lng,label.
3. Load the sample to plot several world cities.
4. Copy the plotted point list or clear/undo points as needed.

Choosing Options Correctly

Use decimal latitude from -90 to 90 and longitude from -180 to 180. This canvas is for quick visual validation, not survey-grade GIS analysis.

Common Use Cases

• Check whether coordinates land in the expected region.
• Spot swapped latitude and longitude values.
• Preview small coordinate lists before importing them elsewhere.

Quick FAQ

Does this use an external map service?
No. It uses a lightweight local canvas map for quick plotting.

Can I remove a point?
Yes. Use Undo Last Point, Clear, or right-click near a marker.

Can I plot a large list of points?
Yes, but keep very large lists practical. The canvas is meant for quick visual checks, not GIS-grade rendering of thousands of markers.

Can it work after the page is loaded?
Yes. The background map and plotting logic run in the browser, so points are not sent to a map provider.