Last updated: 15 June 2026
ElementHider is developed and maintained by Valtteri Hietala (Finland).
Contact for privacy matters: valtteri.t.hietala@gmail.com
This policy applies to the ElementHider browser extension and its optional Supporter Pack verification service.
All your keywords, display preferences, and extension settings are stored only in your browser using the standard browser storage API (chrome.storage). If you have Chrome Sync enabled, these settings may also be synced to your Google account by Chrome — this is governed by Google's own privacy policy, not ours.
We never transmit your keywords or browsing activity to any server.
If you choose to verify a Ko-fi contribution to unlock the Supporter Pack, you provide your email address. We store:
• Your email address (normalised to lowercase)
• Ko-fi transaction ID, donation amount, currency, and donation type
This data is submitted by Ko-fi to our server when you make a donation and share your email. You are not required to verify — the free features work without providing any data.
The email address and transaction record are used solely to verify that you made a Ko-fi contribution, so we can grant you access to Supporter Pack features.
Legal basis under GDPR: Consent (Article 6(1)(a)) — you actively choose to donate and then choose to provide your email in the verification form.
We do not use your data for marketing, profiling, analytics, or any other purpose.
Supporter records are stored in Google Firebase / Cloud Firestore, hosted in the europe-west1 region (Belgium, European Union). Your data does not leave the EU.
Google LLC acts as a data processor under a Data Processing Agreement that complies with GDPR. For Google's data processing terms, see cloud.google.com/terms/data-processing-addendum.
We retain your supporter record for as long as it is needed to provide Supporter Pack access. If you stop using the extension or request deletion, we will erase your record within 30 days of your request. Records with no corresponding active supporter access are deleted within 12 months of the last verification attempt.
To request deletion, email valtteri.t.hietala@gmail.com with the subject line Data Deletion Request.
If you are in the EU/EEA you have the following rights regarding your personal data:
Access — request a copy of the data we hold about you.
Rectification — ask us to correct inaccurate data.
Erasure — ask us to delete your data ("right to be forgotten").
Restriction — ask us to limit processing while a dispute is resolved.
Portability — receive your data in a machine-readable format.
Objection — object to processing based on legitimate interests.
To exercise any of these rights, contact valtteri.t.hietala@gmail.com. We will respond within 30 days.
You have the right to lodge a complaint with your local data protection authority. In Finland, this is the Office of the Data Protection Ombudsman (tietosuoja.fi). You may also contact the authority in your country of residence.
Ko-fi is an independent platform that processes your donation payment. Their privacy policy governs how they handle your payment and personal information. We only receive from Ko-fi what they forward via webhook — your email (if you opted to share it with creators) and basic transaction metadata.
We do not sell, rent, or share your personal data with any other third party for any purpose.
If we make material changes to this policy, we will update the date at the top of this page. Material changes that affect how we collect or use personal data will be communicated via the extension's update notes. Continued use after non-material clarifications constitutes acknowledgement of those updates.
Questions? Contact us at valtteri.t.hietala@gmail.com