Use layer effects sparingly, for emphasis

Reprojecting your data allows you to match the coordinate systems of all your data. For information on how to do this and which coordinate systems to choose, see the tutorial below.

View tutorial

To reproject your data, you'll need to use ArcGIS Pro. To open the current map layers, use the button below.

Open in ArcGIS Pro

Reducing the amount of data in your map doesn't mean reducing it's impact. Why not check out our free online cartography course to get the most from your map while keeping data volumes down.

Find out more

The Map Viewer applies scale thresholds to improve efficiency and performance at different zoom levels without impacting how your map looks. Eco Assistant can further improve efficiency by swapping layers for more generalised versions as you zoom out.

Apply scale thresholds
Scale thresholds
Applying scale thresholds could significantly change your map's cartography. You will be able to undo the changes if needed.

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