Is H1B Sponsor Checker by H1BGrader safe?

Clean risk

H1B Sponsor Checker exposes a company details page that can send stored access codes to its API for employer searches.

The extension makes company_details.html available to any website and uses a companyName URL parameter to run H1BGrader searches. When an access code is saved, that page reads it from extension storage and sends it with the employer name to the H1BGrader API.

H1BGraderv1.0.10Chrome Web Store
0Risk
Who publishes it

H1BGrader - no other listings under this identity, 3 shared hostnames

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

Publisher
H1BGrader

Shared hosts - 3 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

weixsong.github.io
Also called by 3 other listings, including All Tabs Helper
dol.gov
Also called by 4 other listings, including Simplify Copilot, Simplify Copilot – Autofill job applications
uscis.gov
Also called by 5 other listings, including Profile Enhancer Pro

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 1.0.10. 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 api.h1bgrader.com

    *://api.h1bgrader.com/*

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed H1B Sponsor Checker by H1BGrader 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.

  • api.h1bgrader.com

    H1B Sponsor Checker by H1BGrader sends data to api.h1bgrader.com. No other extension we have analysed sends data here.

Updated 30 September 2026lgkipoadghdedmdaheacnjcfabmheeck