Map Sniffer icon

Map Sniffer

by Five Mountains · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Find the map data services behind web maps. Captures feature/map service URLs and downloads layers as GeoJSON.

Users
6
−1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#235K
#196K among extensions
Version
1.0.1
updated 22 May 2026

Users

monthly, 5 months
0510May 2026Aug 2026Oct 2026
Latest, 16 Oct 2026: 6 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months
001May 2026Aug 2026Oct 2026
Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Map Sniffer

A Chrome extension that captures GIS feature/map service URLs behind web maps, dashboards, and embedded geospatial apps. Lets you copy the URLs, copy a ready-to-run `ogr2ogr` command, or download a layer's data as GeoJSON.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days−1−14.3%00.00

Chrome Web Store search rankings

Where Map Sniffer appears when people search the store, with the 30 day change
Search phrasePosition30 days
map#85new

Version history

1 versions recorded
1.0.122 May 2026

Details

Category
Developer Tools
First seen
22 May 2026
Size
19 KB
Languages
en-US
Pricing
Free
Privacy policy
github.com
Extension ID
jphnbnfnkbljbccgbgglgmpcjefnoaof

Permissions and risk

Elevated riskimpact 3, likelihood 3
Permissions
webRequeststoragetabswebNavigationdownloads
Site access
*://*/*FeatureServer**://*/*MapServer**://*/*VectorTileServer**://*/*ImageServer*

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