Is Substly Extension safe?

Clean risk

Substly Extension sends matched page-view URLs and user/account identifiers to app.substly.com.

Substly Extension watches browser navigation for pages matching configuration downloaded from app.substly.com. When a page matches, it strips the URL query string and sends the remaining page URL with site, session, and Substly user/account identifiers to its record_buffered endpoint.

chrome-storev1.2.3Chrome Web Store
1Risk
Who publishes it

Substly AB - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
chrome-store
Declared legal entity
Substly AB
Registered address
Vera Sandbergs allé 5B, Göteborg 411 33, SE
Registered contact
Ola Stål

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.2.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every secure site you visit

    https://*/*

  • Read and change your data on every site you visit

    http://*/*

  • Schedule its own background tasks

    alarms

  • Store data in your browser

    storage

  • See every page you navigate to, as you navigate to it

    webNavigation

  • Sign you in with your Google account

    identity

  • See the email address of your Google account

    identity.email

  • Run its own code inside the pages you visit

    scripting

Where it sends data

Destinations our analysis observed Substly Extension contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • app.substly.com

    Substly Extension sends data to app.substly.com. No other extension we have analysed sends data here.

Updated 30 September 2026fkjmkdagklhjcebfnejjkjmfclgnplgd