This browser extension makes it easy to use the Strava Global Heatmap in JOSM. Accessing this imagery externally requires a set of key parameters that you obtain by signing into the Strava website, copying the values from several cookies which must be included with imagery requests from JOSM in a custom header. The keys expire frequently and the process must be repeated. This extension gathers the url and cookie values automatically so you can quickly open the imagery in JOSM. This extension used to also allow for opening the imagery as a background in the iD Editor. The cookie requirement for imagery access makes this no longer possible. Thankfully julcnx/strava-heatmap-extension now extends the iD editor itself, adding the heatmap as an overlay. Instructions

Visit strava.com/heatmap and log in – sign up for a free account if you don't have one
Optional - Select the heatmap color and activity type you want to use
Click the button pictured in the screenshot
Click the Open in JOSM button (JOSM, Remote control must be enabled)

Using the imagery in other applications The raw URL pattern and cookie header strings are also exposed for other potential uses. These can theoretically be used in any mapping application that supports adding a TMS imagery source with a custom cookie header like JOSM does.

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Published Firefox add-ons:

JOSM Strava Heatmap

Proton Light Grey

Proton Slate