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EULA Generator for Chrome Extensions

Written for Chrome Web Store review: the limited use policy, host permissions and the data-use disclosures.

An extension that runs code on the user’s machine is licensed software, and a EULA is the document that sets the boundaries the store listing does not - redistribution, reverse engineering and the open-source components in the bundle.

Browser extensions are held to a stricter standard than most software because of what they can see. An extension with host permissions can read every page the user visits, and the Chrome Web Store user data policy requires a privacy policy whenever an extension handles personal or sensitive user data - which host permissions alone effectively guarantee.

The Limited Use requirements are the part that catches developers out. Data collected may only be used for the user-facing feature that justified collecting it. Selling it, transferring it for advertising, or using it for creditworthiness or lending is prohibited outright, and human review of the data requires specific circumstances.

The store listing also requires a data-use disclosure and a certification that your handling matches it. As with Apple’s nutrition labels, review compares the disclosure, the manifest permissions and the privacy policy against each other.

What a EULA for a browser extension has to cover

Licence grant and its scope across the user’s browser profiles and devices
Restrictions on modifying, redistributing or reverse engineering the extension
Open-source component attributions shipped with the build
Update behaviour and any telemetry the client reports back
Termination and removal of locally stored data

How a browser extension actually moves personal data

Page content read under host permissions

An extension with broad host access can see page contents including form fields, which is the most sensitive category a store reviewer looks for.

Browsing activity

URLs and navigation history, which are personal data and are specifically called out in the store policy.

Local versus remote storage

Whether data stays in chrome.storage.local or is synced to your servers is the single most important disclosure in an extension policy.

Analytics inside the extension

Event tracking from a context that can see everything the user browses, which needs unusually careful scoping.

Authentication and account linking

OAuth tokens and account identifiers where the extension connects to a service.

Sync across devices

chrome.storage.sync moves data through Google’s infrastructure to the user’s other devices.

Third parties the draft will ask you about

Google (Chrome Web Store, storage.sync) · your own backend · Sentry · PostHog or Amplitude · Stripe for paid extensions

The rules that apply

Chrome Web Store User Data Policy

A privacy policy is required for any extension handling personal or sensitive user data, and must be posted in the developer dashboard.

Limited Use requirements

Data may only be used for the disclosed user-facing feature. Selling it or transferring it for advertising or credit assessment is prohibited.

Minimum permissions

Requesting broader host permissions than the feature needs is a rejection reason, and each permission needs a justification in the listing.

Data-use disclosure and certification

The store listing declares what is collected and certifies that handling matches the disclosure.

Remote code restrictions

Manifest V3 prohibits executing remotely hosted code, which constrains how analytics and feature flags can be implemented.

What the generated EULA contains

Licence grant and its boundaries
Non-exclusive, revocable, per-device or per-seat - and explicitly a licence, not a sale.
Restrictions
Reverse engineering, redistribution, resale, and running the software as a service for third parties.
Ownership and third-party components
That the IP stays yours, plus the open-source components whose own licences travel with the build.
Updates, telemetry and support
What updates are automatic, what data the client reports back, and what support the licence entitles someone to.
Termination and what happens to data
The events that end the licence, and whether local data survives.
Warranty, liability and export control
As-is warranties where permitted, a defensible cap, and the export restrictions distribution platforms require you to pass through.

Getting through Chrome Web Store review

Cut permissions to the minimum the feature needs
And write the justification for each one before submitting.
State plainly whether data leaves the device
One sentence near the top of the policy answers most reviewer and user concerns.
Scope analytics so it cannot capture URLs or page content
And say so explicitly.
Complete the data-use disclosure from the policy
So the two cannot diverge.
Host the policy at a stable public URL
Entered in the developer dashboard and linked from the extension itself.

Where this usually goes wrong

Requesting broad host permissions "just in case"

Minimum permissions is an enforced requirement, and over-broad access is a common rejection.

Not saying whether data leaves the device

This is the first question a reviewer and a privacy-conscious user both ask.

Analytics that captures URLs

Browsing history is sensitive under the store policy, and capturing it inside an analytics event is easy to do accidentally.

A disclosure that does not match the manifest

Review compares permissions, the data-use disclosure and the policy.

Transferring data for advertising

Prohibited by Limited Use, regardless of consent.

A privacy policy URL that is not publicly reachable

It must resolve without a login, and reviewers check.

Frequently asked questions

Does my Chrome extension need a privacy policy?

If it handles personal or sensitive user data, yes - and requesting host permissions effectively puts you in that category. The policy URL goes in the developer dashboard.

What are the Limited Use requirements?

Data collected may only be used for the user-facing feature disclosed to the user. Selling it, transferring it for advertising, or using it for creditworthiness or lending is prohibited, and human review is restricted to specific circumstances.

Can I run analytics in an extension?

Yes, with care. Scope it so it cannot capture URLs or page content, disclose it in the policy and the data-use declaration, and remember that Manifest V3 prohibits executing remotely hosted code.

What is the difference between a EULA and terms of service?

A EULA licenses software that runs on the user’s own device. Terms of service govern a service you host and operate. Desktop apps, mobile apps and downloadable tools need a EULA; a web app usually needs terms.

Does my mobile app need its own EULA?

Apple applies its standard licensed application end user licence agreement unless you supply your own, and if you do, you must meet or exceed its minimum terms. Google Play expects a licence too. If you have custom restrictions, supply your own.

Do I need to list open-source components?

If you ship them, yes. Most permissive licences require attribution in the distributed product, and copyleft licences impose conditions that your own EULA cannot override.