Free Chrome extension · No sign-up
Open it on any page with a map. It finds API key, billing and website-restriction errors, removed features and slow loading, then tells you what to change. Deep scan catches the errors Google only prints to the browser console.
Runs in your browser. Page content, keys and results stay on your device.
See it in action
A real run on a demo business site: the problems on a broken Google map, Show on page, Deep scan, a second map provider and a client report.
Plays from YouTube. Watch it on YouTube
01 / Find the problem
Open it on a page with a map. It lists every map, the provider behind it and what’s stopping it from working: a missing or placeholder API key, billing, website restrictions, a disabled API or a retired client ID. Each problem comes with the next step and a link to the documentation.
02 / Deep scan
Google prints the exact error, such as RefererNotAllowedMapError, to the browser console, not the page. Deep scan reloads the page once with a recorder running and catches map errors, blocked scripts and failed key checks. Chrome asks for your OK the first time on each site.
03 / Any map provider
It recognises Google Maps (scripts, embeds and static maps), Mapbox, MapLibre, Leaflet, OpenLayers, Apple MapKit, ArcGIS, HERE, Bing, Azure Maps and TomTom. Each map is listed with its size and position, and Show highlights it on the page.
More checks
Flags the removed Drawing and Heatmap libraries, retired versions, legacy markers and Places Autocomplete, and the Bing Maps for Enterprise shutdown.
Render-blocking map scripts, a missing loading=async, map iframes below the fold that aren’t lazy-loaded, and how many map requests the page makes.
Map iframes without a title, which screen readers announce as an unnamed frame.
Mapbox secret tokens left in page code, which anyone can copy.
Copy a Markdown report or plain text, or download JSON.
Recent scans stay in your browser for before-and-after checks on client sites.
Getting started
It works on any website, including your clients’ and your competitors’.
Then pin it from Chrome’s puzzle-piece menu so the icon stays in your toolbar.
The popup checks the page straight away. Press Alt+Shift+M to open it from the keyboard.
Follow the steps for each problem, or copy a Markdown report for whoever looks after the site.
Every check runs on your computer. Page content, API keys, results and saved scans stay on your device and aren’t sent to A1 Local or anyone else. No account, no tracking. Read the extension privacy policy.
Yes. No account, no trial and no paid tier. It’s a free tool from A1 Local, like the others on this site.
No. Every check runs in your browser. Page content, API keys, results and saved scans stay on your device. Keys are redacted before they’re shown or copied.
Google darkens the map like that when the key, billing or website restrictions are wrong. Run a Deep scan to see the exact error Google reports for your page, then follow the fix shown for it.
To record console errors from the moment the page starts loading, it needs access to that one site while it reloads the page. Chrome asks the first time you use it on each site, and you can remove that access in the extension’s settings.
No. It reports what it can see on the page and in the console. It can’t log in to Google Cloud or test a key directly.
Google Chrome, installed from the Chrome Web Store.
