Privacy Policy

Last updated: 2 March 2026

Elsewhere (“the Extension”, “we”, “us”, or “our”) is a Chrome browser extension that automatically finds secondhand alternatives on Vinted when you browse supported fashion retail websites. This Privacy Policy explains what data we collect, how we use it, and your rights as a user.

Chrome Web Store compliance: The use and transfer to any other app of information received from Google APIs will adhere to the Chrome Web Store User Data Policy, including the Limited Use requirements.

1. Data We Collect

1.1 Product Information

When you visit a supported retailer’s product page, the Extension automatically reads publicly-visible product data displayed on that page and transmits a subset of it to our servers.

Data transmitted to our servers:

Data read locally but not transmitted:

The Extension also reads the following fields from the page to assist with extraction accuracy. These fields are processed entirely within your browser and are not sent to our servers:

We do not track your global browsing history. The page URLs we collect are limited strictly to product pages on supported retail websites and are used solely to find secondhand matches. This data does not include your name, email address, payment details, or any other personally identifiable information.

1.2 Instance Identifier

When you first use the Extension, a single random unique identifier (UUID) is generated and stored in your browser’s local extension storage (chrome.storage.local). This ID:

1.3 Usage Analytics

The Extension sends anonymous usage events to PostHog (our analytics provider) to help us understand how the Extension is used and improve it. The events sent are:

EventData Included
Extension installedInstance ID, version
Extension updatedInstance ID, prev/new version
Product extractedInstance ID, URL, candidate count, price, currency
Extraction failedInstance ID, failure reason
Unsupported siteInstance ID, retailer hostname

No event includes your name, email address, global browsing history, or any other personally identifiable information.

2. How We Use Your Data

We use collected data exclusively to:

  1. Provide the core service – Product data is sent to our servers to search Vinted for secondhand matches, which are then displayed in the Extension popup.
  2. Improve the Extension – Anonymous analytics help us understand which sites perform well, diagnose failures, and prioritise improvements.
  3. Improve match quality – Product data sent to our servers may be retained to train and evaluate machine-learning models for product matching. Before any data is used for this purpose, the Instance ID is stripped so that the retained data cannot be linked back to any installation or individual.
  4. Maintain service reliability – The Instance ID allows us to detect and investigate errors without identifying individuals.

We do not:

3. Data Sharing

3.1 Elsewhere Backend

Product data extracted from retailer pages is transmitted to our backend servers over an encrypted HTTPS connection. Our servers use this data to search Vinted for matching secondhand listings. Product data may be retained on our servers to improve match quality and train product-matching models. Before being used for machine-learning purposes, the Instance ID is removed so the data is fully anonymous. Transmissions are authenticated with an API key and are not associated with any personal identity.

3.2 PostHog (Analytics)

Anonymous usage events are sent to PostHog, our analytics provider. PostHog processes this data on our behalf under a data processing agreement and stores it on EU-based infrastructure. PostHog’s privacy policy is available at posthog.com/privacy.

We do not share your data with any other third parties.

4. Data Storage

4.1 In Your Browser

The Extension stores the following data locally in chrome.storage.local:

DataPurposeRetention
Instance ID (UUID)Analytics, de-dup, API-key setupUntil uninstall
API keyAuthenticate requests to our backendUntil uninstall
Last extracted dataDisplay results in popupUntil next extraction
Candidate matchesDisplay results in popupUntil next extraction

This data is stored encrypted by Chrome and is not accessible to other websites or extensions.

4.2 On Our Servers

Product information (title, price, images, URL, brand, retailer) sent to our backend may be retained for improving product matching and training machine-learning models. Before any data is used for model training, the Instance ID is stripped. The retained data contains no information that could identify a user or installation.

5. Permissions Explained

The Extension requests the following browser permission:

The Extension declares host permissions for supported fashion retail domains (currently endclothing.com, mrporter.com, ssense.com, and farfetch.com) as well as our backend server and analytics provider. Host permissions for retail domains allow the Extension to:

Host permissions for our backend API server and PostHog (analytics) allow the Extension to transmit product data and anonymous usage events over HTTPS.

The Extension does not access any websites or pages outside of the domains listed above.

6. Data Security

All data transmitted between the Extension and our servers is sent over HTTPS. Your Instance ID is stored locally in Chrome’s encrypted extension storage. We do not transmit or store passwords, payment information, or any sensitive personal data.

7. Children’s Privacy

The Extension is not directed at children under the age of 13. We do not knowingly collect data from children. If you believe a child has used the Extension, please contact us using the details below.

8. Your Rights

Because the Extension does not collect personally identifiable information and uses only an anonymous Instance ID, most data protection rights (such as subject access requests) do not apply in practice. If you wish to reset your Instance ID, you can do so by uninstalling and reinstalling the Extension. If you have any questions about data we hold, please contact us.

9. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will update the “Last updated” date at the top of this document. Continued use of the Extension after changes are published constitutes acceptance of the updated policy.

10. Contact

If you have questions or concerns about this Privacy Policy or the data practices described here, please contact us:

Email: hello@elswhr.shop


Elsewhere is an independent product and is not affiliated with, endorsed by, or sponsored by any of the retail websites it supports.